Submission #3982527

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Source Code Expand

#include <iostream>
#include <algorithm>
#include <vector>
#include <map>
#include <string>
#include <cmath>
#include <iomanip>
#include <numeric>
#include <cmath>
#include <set>

using namespace std;

#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define rep(i, n) FOR(i, 0, n)
#define SORT(c) sort((c).begin(), (c).end())
#define INF (ll)1e18
#define MOD (ll)1e9 + 7
#define pb push_back

typedef long long ll;
typedef long long int llt;
typedef pair<int, int> P;
typedef vector<int> V;
typedef map<int, int> M;

int main()
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    string s;
    cin >> s;
    int cnt = 0;
    for (int i = 0; i < 6;i++){
        if(s[i]=='1')
            cnt++;
    }
    cout << cnt << endl;
    return 0;
}

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