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aoc2022/06/solution.c
2022-12-06 09:06:29 +01:00

34 lines
674 B
C

#include <stdio.h>
#include <string.h>
int count(const char *l, size_t len, int num) {
int i, j, cc[26] = {0}, tc;
for (i = 0; i < len - num; i++) {
if (i > 0) {
cc[l[i-1] - 'a']--;
cc[l[i+num-1] - 'a']++;
} else
for (j = 0; j < num; j++)
cc[l[i+j] - 'a']++;
for (j = 0, tc = 0; j < 26; j++)
tc += cc[j] == 1;
if (tc == num)
return i + num;
}
return 0;
}
int main(void) {
char l[4096];
size_t len;
fgets(l, 4096, stdin);
len = strlen(l);
printf("Silver: %d\nGold: %d\n",
count(l, len, 4), count(l, len, 14));
}