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#include <stdio.h>
#include <string.h>
int main()
{
FILE *f = fopen("INP.TXT", "r");
char x[100001], y[100001];
long i, m, n, r = -1;
fscanf(f, "%s %s", x, y);
fclose(f);
m = strlen(x);
n = strlen(y) - m;
for (i = 0; i < n; i++)
if (!strncmp(x, y + i, m)) {
r = i + 1;
break;
}
f = fopen("OUT.TXT", "w");
fprintf(f, "%ld\n", r);
fclose(f);
return 0;
}
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