Here is problem solution in Python, java, C++, C and Javascript - https://programmingoneonone.com/hackerrank-save-the-prisoner-problem-solution.html

My Javascript solution:

function saveThePrisoner(n, m, s) {

return (s+m-1)%n || n;

}

Here solution in c++, you can watch the explanation here : https://youtu.be/xoV2P0Pv9Fg

Solution 1 :

int saveThePrisoner(int n, int m, int s) {
    int c = (m % n) + s - 1 ;
    if ( c > n) c -= n;
    if ( c == 0) return n;
    return c;
}

Solution 2 :

int saveThePrisoner(int n, int m, int s) {
    return (m - 1  + s - 1 ) % n + 1;
}

C++ Solution:

int saveThePrisoner(int n, int m, int s) {
    int warn = 0;
    warn = (m+(s-1)) % n; 
    if(warn == 0) warn = n;
    return warn;
}

public static int saveThePrisoner(int n, int m, int s) {
    return (((((m % n) + (s - 1)) % n) + (n - 1)) % n) + 1;
}