#include <bits/stdc++.h>

using namespace std;

int main() {
    int n = 13, m = 3;
    printf("%d\n", (n - 1) / m + 1);

    n = 12, m = 3;
    printf("%d\n", (n - 1) / m + 1);

    n = 11, m = 3;
    printf("%d\n", (n - 1) / m + 1);

    n = 1, m = 3;
    printf("%d\n", (n - 1) / m + 1);
    return 0;
}