Submission #1948114


Source Code Expand

#include <map>
#include <set>
#include <cmath>
#include <queue>
#include <string>
#include <vector>
#include <iomanip>
#include <iostream>
#include <algorithm>
#include <functional>
using namespace std;
int N, H, a[100009], b[100009], p[200009];
int main() {
	cin >> N >> H;
	for (int i = 0; i < N; i++) cin >> a[i] >> b[i];
	for (int i = 0; i < 2 * N; i++) p[i] = i;
	sort(p, p + 2 * N, [](int i, int j) {
		int vala = (i < N ? a[i] : b[i - N]);
		int valb = (j < N ? a[j] : b[j - N]);
		if (vala != valb) return vala > valb;
		return i < j;
	});
	int cnt = 0;
	for (int i = 0; i < 2 * N && H > 0; i++) {
		if (p[i] >= N) cnt++, H -= b[p[i] - N];
		else {
			cnt += (H + a[p[i]] - 1) / a[p[i]];
			H = 0;
		}
	}
	cout << cnt << endl;
	return 0;
}

Submission Info

Submission Time
Task D - Katana Thrower
User square1001
Language C++14 (GCC 5.4.1)
Score 400
Code Size 779 Byte
Status AC
Exec Time 125 ms
Memory 1792 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 400 / 400
Status
AC × 4
AC × 24
Set Name Test Cases
Sample a01, a02, a03, a04
All a01, a02, a03, a04, b05, b06, b07, b08, b09, b10, b11, b12, b13, b14, b15, b16, b17, b18, b19, b20, b21, b22, b23, b24
Case Name Status Exec Time Memory
a01 AC 1 ms 256 KB
a02 AC 1 ms 256 KB
a03 AC 1 ms 256 KB
a04 AC 1 ms 256 KB
b05 AC 1 ms 256 KB
b06 AC 125 ms 1792 KB
b07 AC 1 ms 256 KB
b08 AC 125 ms 1792 KB
b09 AC 1 ms 256 KB
b10 AC 1 ms 256 KB
b11 AC 1 ms 256 KB
b12 AC 1 ms 256 KB
b13 AC 43 ms 1792 KB
b14 AC 43 ms 1792 KB
b15 AC 45 ms 1792 KB
b16 AC 45 ms 1792 KB
b17 AC 96 ms 1792 KB
b18 AC 84 ms 1792 KB
b19 AC 68 ms 1792 KB
b20 AC 77 ms 1792 KB
b21 AC 80 ms 1792 KB
b22 AC 90 ms 1792 KB
b23 AC 1 ms 256 KB
b24 AC 3 ms 256 KB