문제
풀이
#include <iostream>
#include <string>
using namespace std;
void solve(void) {
string s, ans; cin >> ans;
while (cin >> s) {
for (int i=0; i<s.length(); i++) {
int x = ((ans[i] - '0') + (s[i] - '0')) % 10;
ans[i] = x + '0';
}
}
cout << ans;
}
int main(void) {
ios::sync_with_stdio(false);
cin.tie(nullptr);
solve();
return 0;
}