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#include <stdio.h>
#include <stdlib.h>
int main()
{
FILE *f = fopen("INP.TXT", "r");
char n, i, j;
short m, *a;
fscanf(f, "%hhd %hd", &n, &m);
a = malloc(n * sizeof(short));
for (i = 0; i < n; i++)
fscanf(f, "%hd", a + i);
fclose(f);
f = fopen("OUT.TXT", "w");
for (i = 0; i + 1 < n; i++)
for (j = i + 1; j < n; j++)
if (a[i] + a[j] == m) {
fprintf(f, "%hhd %hhd\n", i + 1, j + 1);
fclose(f);
return 0;
}
fputs("-1\n", f);
fclose(f);
return 0;
}
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