Submission #704451

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
704451	2023-03-02 06:42:15	delrey	Lun (COCI19_lun)	C++14	40 / 50	1 ms	300 KiB

lun

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#include <bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    string s;
    cin>>n>>s;
    int x = 0;
    while(s[x] != 'x')
        x++;
    int sum = 0;
    for(int i = n - 2; i >= 0; i--)
    {
        if(s[i] == 'x')
            continue;
        int a = s[i] - '0';
        if((n - 2 - i) % 2 == 0)
        {
            a *= 2;
            if(a > 9)
                a = a / 10 + a % 10;
        }
        sum += a;
        //cout<<a<<" ";
    }
    //cout<<endl<<sum<<" ";
    sum *= 9;
    sum %= 10;
 
 
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• Subtask 1: 40 / 50