Submission #824175

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
824175	2023-08-13 17:08:22	Trisanu_Das	Lun (COCI19_lun)	C++17	50 / 50	1 ms	304 KiB

lun

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#include <bits/stdc++.h>   
using namespace std;
    
int main(){
    int n;string s;
    cin >> n >> s;
  if(n == 1){
      cout << "0\n";
      return 0;
    }
    for(int i = 0;i < 10;i ++){
      int ans = 0;
      for(int j = n - 2;j >= 0;j -= 2){
        int d = (s[j] - '0') * 2;
        if(s[j] == 'x')d = i * 2;
        if(d > 9)d = d % 10 + d / 10;
        ans += d;
      }
      for(int j = n - 3;j >= 0;j -= 2){
        int d = s[j] - '0';
        if(s[j] == 'x')d = i;
        ans += d;
      }
      ans = ans * 9;
      int d = (s[n - 1] == 'x') ? i : s[n - 1] - '0';
      if(ans % 10 == d) cout << i << '\n';
    }
}
 
 
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• Subtask 1: 50 / 50