Submission #100357

#	Time	Username	Problem	Language	Result	Execution time	Memory
100357		Ort	Lun (COCI19_lun)	C++11	40 / 50	3 ms	384 KiB

lun

#include<algorithm>
#include<iostream>
#include<string>
#include<vector>
#include<cctype>

using namespace std;

string s;
vector<int> sv;
int n; bool t;

int main() {
	cin.sync_with_stdio(0); cin.tie(0);
	cin >> n;
	cin >> s;
	reverse(s.begin(),s.end());
	for(int i=0;i<n;i++) {
		if(isdigit(s[i])) {
			if(i%2) {
				int num = s[i]-'0';
				num *= 2;
				if(num>9) num = (num%10) + (num/10);
				sv.push_back(num);	
			}
			else sv.push_back(s[i]-'0');
		}
		else {sv.push_back(-1); if(i%2) t=1;}
	}
	long long sum = 0;
	for(int i=0;i<n;i++) sum += (long long)(sv[i]!=-1?sv[i]:0);
	if(!t) cout << (sum*9)%10;
	else cout << ((sum*9)%10) /2;
	return 0;
}

• Subtask 1: 40 / 50