97 lines
6.4 KiB
C
97 lines
6.4 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <gmp.h>
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int main(int argc, char **argv)
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{
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char n[100][51] = {"37107287533902102798797998220837590246510135740250", "46376937677490009712648124896970078050417018260538",
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"74324986199524741059474233309513058123726617309629", "91942213363574161572522430563301811072406154908250",
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"23067588207539346171171980310421047513778063246676", "89261670696623633820136378418383684178734361726757",
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"28112879812849979408065481931592621691275889832738", "44274228917432520321923589422876796487670272189318",
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"47451445736001306439091167216856844588711603153276", "70386486105843025439939619828917593665686757934951",
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"62176457141856560629502157223196586755079324193331", "64906352462741904929101432445813822663347944758178",
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"92575867718337217661963751590579239728245598838407", "58203565325359399008402633568948830189458628227828",
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"80181199384826282014278194139940567587151170094390", "35398664372827112653829987240784473053190104293586",
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"86515506006295864861532075273371959191420517255829", "71693888707715466499115593487603532921714970056938",
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"54370070576826684624621495650076471787294438377604", "53282654108756828443191190634694037855217779295145",
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"36123272525000296071075082563815656710885258350721", "45876576172410976447339110607218265236877223636045",
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"17423706905851860660448207621209813287860733969412", "81142660418086830619328460811191061556940512689692",
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"51934325451728388641918047049293215058642563049483", "62467221648435076201727918039944693004732956340691",
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"15732444386908125794514089057706229429197107928209", "55037687525678773091862540744969844508330393682126",
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"18336384825330154686196124348767681297534375946515", "80386287592878490201521685554828717201219257766954",
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"78182833757993103614740356856449095527097864797581", "16726320100436897842553539920931837441497806860984",
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"48403098129077791799088218795327364475675590848030", "87086987551392711854517078544161852424320693150332",
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"59959406895756536782107074926966537676326235447210", "69793950679652694742597709739166693763042633987085",
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"41052684708299085211399427365734116182760315001271", "65378607361501080857009149939512557028198746004375",
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"35829035317434717326932123578154982629742552737307", "94953759765105305946966067683156574377167401875275",
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"88902802571733229619176668713819931811048770190271", "25267680276078003013678680992525463401061632866526",
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"36270218540497705585629946580636237993140746255962", "24074486908231174977792365466257246923322810917141",
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"91430288197103288597806669760892938638285025333403", "34413065578016127815921815005561868836468420090470",
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"23053081172816430487623791969842487255036638784583", "11487696932154902810424020138335124462181441773470",
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"63783299490636259666498587618221225225512486764533", "67720186971698544312419572409913959008952310058822",
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"95548255300263520781532296796249481641953868218774", "76085327132285723110424803456124867697064507995236",
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"37774242535411291684276865538926205024910326572967", "23701913275725675285653248258265463092207058596522",
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"29798860272258331913126375147341994889534765745501", "18495701454879288984856827726077713721403798879715",
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"38298203783031473527721580348144513491373226651381", "34829543829199918180278916522431027392251122869539",
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"40957953066405232632538044100059654939159879593635", "29746152185502371307642255121183693803580388584903",
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"41698116222072977186158236678424689157993532961922", "62467957194401269043877107275048102390895523597457",
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"23189706772547915061505504953922979530901129967519", "86188088225875314529584099251203829009407770775672",
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"11306739708304724483816533873502340845647058077308", "82959174767140363198008187129011875491310547126581",
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"97623331044818386269515456334926366572897563400500", "42846280183517070527831839425882145521227251250327",
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"55121603546981200581762165212827652751691296897789", "32238195734329339946437501907836945765883352399886",
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"75506164965184775180738168837861091527357929701337", "62177842752192623401942399639168044983993173312731",
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"32924185707147349566916674687634660915035914677504", "99518671430235219628894890102423325116913619626622",
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"73267460800591547471830798392868535206946944540724", "76841822524674417161514036427982273348055556214818",
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"97142617910342598647204516893989422179826088076852", "87783646182799346313767754307809363333018982642090",
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"10848802521674670883215120185883543223812876952786", "71329612474782464538636993009049310363619763878039",
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"62184073572399794223406235393808339651327408011116", "66627891981488087797941876876144230030984490851411",
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"60661826293682836764744779239180335110989069790714", "85786944089552990653640447425576083659976645795096",
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"66024396409905389607120198219976047599490197230297", "64913982680032973156037120041377903785566085089252",
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"16730939319872750275468906903707539413042652315011", "94809377245048795150954100921645863754710598436791",
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"78639167021187492431995700641917969777599028300699", "15368713711936614952811305876380278410754449733078",
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"40789923115535562561142322423255033685442488917353", "44889911501440648020369068063960672322193204149535",
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"41503128880339536053299340368006977710650566631954", "81234880673210146739058568557934581403627822703280",
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"82616570773948327592232845941706525094512325230608", "22918802058777319719839450180888072429661980811197",
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"77158542502016545090413245809786882778948721859617", "72107838435069186155435662884062257473692284509516",
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"20849603980134001723930671666823555245252804609722", "53503534226472524250874054075591789781264330331690"};
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char result[100];
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int i;
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double elapsed;
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struct timespec start, end;
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mpz_t a, b;
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clock_gettime(CLOCK_MONOTONIC, &start);
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mpz_inits(a, b, NULL);
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mpz_set_str(a, n[0], 10);
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for(i = 1; i < 100; i++)
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{
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mpz_set_str(b, n[i], 10);
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mpz_add(a, a, b);
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}
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gmp_sprintf(result, "%Zd\n", a);
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mpz_clears(a, b, NULL);
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clock_gettime(CLOCK_MONOTONIC, &end);
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elapsed = (end.tv_sec-start.tv_sec) + (double)(end.tv_nsec - start.tv_nsec) / 1000000000;
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printf("Project Euler, Problem 13\n");
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printf("Answer: ");
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for(i = 0; i < 10; i++)
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{
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printf("%c", result[i]);
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}
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printf("\n");
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printf("Elapsed time: %.9lf seconds\n", elapsed);
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return 0;
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}
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