Submission #824175

#	Time	Username	Problem	Language	Result	Execution time	Memory
824175		Trisanu_Das	Lun (COCI19_lun)	C++17	50 / 50	1 ms	304 KiB

lun

#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';
   	}
}

• Subtask 1: 50 / 50