Submission #2093925

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int (i)=(0);(i)<(int)(n);++(i))
using ll = long long;
using P = pair<int, int>;
using namespace std;

template<class T> void vin(vector<T>& v, int n) {
    v.resize(n);
    for (int i = 0; i < n; ++i) {
        cin >> v[i];
    }
}

int main() {
    string s;
    cin >> s;
    int ans = 0;
    rep(i, s.size()) {
        if (s[i] == '1') ans++;
    }
    cout << ans << endl;
    return 0;
}

Submission Info

Judge Result