Multiple of 9

Problem Link

Solution by Mr.Olimpia — 100 pts

Code / Notes

#include <bits/stdc++.h>
using namespace std;

// https://ide.usaco.guide/Ov5Bu8j7yJ_6itiOaT2

// P[3] = 5 -> o pai do 3 é o 5
// P[3] = -1 -> 3 não tem pai

int main() {
    string n;
    cin >> n;
    int ans=0;
    for(int i=0; i < n.size(); i++){
        ans = ans + n[i]-'0';
    }
    int x=ans/9;
    if(x*9==ans){
        cout << "Yes";
    }
    else{
        cout << "No";
    }
}

Last updated 1 month, 3 weeks ago


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