Submission #1270557

#	Time	Username	Problem	Language	Result	Execution time	Memory
1270557		trideser	Boarding Passes (BOI22_passes)	C++20	5 / 100	2 ms	584 KiB

passes

#include <bits/stdc++.h>
#define int long long
using namespace std;
int32_t main() {
	string s;
	cin >> s;
	int a = s.size() / 2;
	int b = (s.size() + 1) / 2;
	//cout << a << " " << b << "\n";
	int sum = a * (a - 1) / 2 + b * (b - 1) / 2;
	//cout << sum << "\n";
	cout << sum / 2;
	if(sum & 1)
		cout << ".5\n";
	else
		cout << "\n";
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 25
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40