abc343_a_wrong_answer.cpp

// Wrong Answer | https://atcoder.jp/contests/abc343/tasks/abc343_a
// Time: O(1); extra space: O(1).
#include <algorithm>
#include <iostream>
#include <string>
#include <vector>

void solve() {
    int a,b;
    std::cin>>a>>b;
    std::cout<<(a+b+1)%10<<'\n';
}

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    solve();
}