Submission #1168152

#	Time	Username	Problem	Language	Result	Execution time	Memory
1168152		stdfloat	Boat (APIO16_boat)	C++20	0 / 100	2095 ms	320 KiB

boat

#include <bits/stdc++.h>
using namespace std;

using ll = long long;

int n, ans = -1;

vector<int> a, b;

void f(int x, int lst) {
	if (x == n) return ans++, void();

	f(x + 1, -1);
	for (int i = max(lst + 1, a[x]); i <= b[x]; i++)
		f(x + 1, i);
}

int main() {
	ios::sync_with_stdio(false); cin.tie(nullptr);

	cin >> n;

	a.assign(n, 0);
	b.assign(n, 0);
	for (int i = 0; i < n; i++)
		cin >> a[i] >> b[i];

	f(0, -1);

	cout << ans;
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 22
• Subtask 3: 0 / 27
• Subtask 4: 0 / 42