Amplitude Hackathon '23 Practice Problem 2 - Go Amplitude!

    1#include <bits/stdc++.h>
    2using namespace std;
    3using ll = long long;
    4using i128 = __int128;
    5const int inf = 1e9;
    6const ll INF = 1e18; //❄️
    7int main() {
    8    ios::sync_with_stdio(0); cin.tie(0); 
    9    string n; cin >> n;
    10    string s = "GOAMPLITUDE";
    11    int indx = 0;
    12    for (char c : n) {
    13        indx = (indx * 10 + (c - '0')) % 11;
    14    }
    15    cout << s[indx >= 1 ? indx - 1 : 10] << '\n';
    16    return 0;
    17}