Minimum Number of Coins Solution || Codechef March Lunchtime 2022

        

Minimum Number of Coins Solution 

Codechef March Lunchtime 2022

Problem Code : MINCOINS

Problem Link : https://www.codechef.com/LTIME106B/problems/MINCOINS

Solution :

#include <bits/stdc++.h>

#define ll long long int

#define ull unsigned long long int

using namespace std;

void solve()

{

    ll x;

    cin >> x;

    if (x % 5)

    {

        cout << "-1\n";

    }

    else

    {

        ll ten = x / 10;

        cout << ten + (x - ten * 10) / 5 << "\n";

    }

}

int main()

{

    ll t;

    cin >> t;

    while (t--)

    {

        solve();

    }

}