Submission #377146

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
377146	2021-03-13 04:29:42	marat0210	Lun (COCI19_lun)	C++14	25 / 50	1 ms	364 KiB

lun

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#include <bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    string s;
    cin >>n>>s;
    long long sum = 0;
    for (int i = 0; i < n; ++i) {
        if (i % 2 == 1 and s[i] != 'x') {
            long long k = (s[i] - '0') * 2;
            if (k > 9) {
                sum += (1 + k % 10);
            }
            else {
                sum += k;
            }
        }
        else {
            if (s[i] != 'x') {
                sum += (s[i] - '0');
            }
        }
    }
    long long res = (sum * 9) % 10;
    cout <<res<<endl;
}
 
 
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• Subtask 1: 25 / 50