Submission #1311026

#	Time	Username	Problem	Language	Result	Execution time	Memory
1311026		discontinuous	Snail (NOI18_snail)	C++20	20 / 100	5 ms	8264 KiB

snail

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

#define pb push_back
#define int long long

const int MOD = 1e9 + 7;
const int INF = 1e13;
const int N = 1e6;

int n, m, k, a, b, c, d, h, l, r, q, u, v, x, y;
vector<int> arr(N);

void solve() {
	cin >> h >> n;

	d = 0;
	x = 0;

	a=-1;
	b=-1;

	for(int i = 0; i<n; i++) {
		cin >> arr[i];
		d += arr[i];

		x = max(x, d);
		if(d>=h && a==-1) {
			a = 0;
			b = i;
		}
	}

	if(a!=-1) {
		cout << a << " " << b;
		return;
	}

	if(d<=0) {
		cout << -1 << " " << -1; 
		return;
	}

	l = h;
	r = 0;

	while(r<l-1) {
		m = r + (l-r)/2;

		c = d*(m-1);
		c += x;

		if(c >= h) l = m;
		else r = m;
	}

	c = d*(l-1);

	for(int i = 0; i<n; i++) {
		c += arr[i];
		if(c>=h) {
			cout << l-1 << " " << i;
			return;
		}
	}


}

int32_t main() {
    ios::sync_with_stdio(false);
    cout.tie(0); cin.tie(0);

	int tc = 1;
	// cin >> tc;

	while(tc--) {
		solve();
		cout << "\n";
	}

	return 0;
}

• Subtask 1: 11 / 11
• Subtask 2: 9 / 9
• Subtask 3: 0 / 25
• Subtask 4: 0 / 17
• Subtask 5: 0 / 38