Submission #1169165

#	Time	Username	Problem	Language	Result	Execution time	Memory
1169165		mnbvcxz123	Lun (COCI19_lun)	C++20	50 / 50	0 ms	328 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';
		}
	}
	return 0;
}

• Subtask 1: 50 / 50