kusac

#include <iostream>

using namespace std;

int main(){
    int n, m, v=0;
    cin >> n >> m;
    for(int i=0; i<=n*m; i+=n){
        if(i%m) ++v;
    }
    cout << v;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED