#include <iostream>
using namespace std;
int main() {
int numbers[] = {2, 7, 11, 15};
int n = 4;
int target = 9;
for(int i = 0; i < n; i++) {
for(int j = i + 1; j < n; j++) {
if(numbers[i] + numbers[j] == target) {
cout << i << " " << j << endl;
break;
}
}
}
return 0;
}
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