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#include "../../lib/uthash.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
struct num {
int num;
int index;
UT_hash_handle hh;
};
int add(struct num **nums, int index, int num)
{
struct num *n;
HASH_FIND_INT(*nums, &num, n);
if (!n) {
n = malloc(sizeof(*n));
n->index = index;
n->num = num;
HASH_ADD_INT(*nums, num, n);
return 0;
}
int diff = index - n->index;
n->index = index;
return diff;
}
void calc(FILE *fp)
{
struct num *nums = NULL;
int num, index = 1;
while (fscanf(fp, "%d,", &num) == 1)
num = add(&nums, index++, num);
while (index < 2020)
num = add(&nums, index++, num);
printf("%d\n", num);
while (index < 30000000)
num = add(&nums, index++, num);
printf("%d\n", num);
}
int main(int argc, char *argv[])
{
FILE *fp = fopen("input", "r");
if (!fp)
exit(EXIT_FAILURE);
clock_t tic = clock();
calc(fp);
clock_t toc = clock();
printf("TIME: %f seconds\n", (double)(toc - tic) / CLOCKS_PER_SEC);
fclose(fp);
return 0;
}
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