답안 #19117

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
19117	2016-02-18T13:57:27 Z	tlwpdus	Be Two Bees (OJUZ10_b2b)	C++	100 / 100	945 ms	2648 KB

b2b

#include<stdio.h>
#include<algorithm>

using namespace std;

typedef long long ll;
typedef pair<ll,ll> pll;
#define h first
#define t second

const ll INF = 1LL<<60;

int n;
pll arr[100100];
double x;
ll S;

bool cmp(pll a, pll b) {
	return x/a.t+a.h<x/b.t+b.h;
}

pll m1, m2;
int t1, t2;
bool ok() {
	m1=pll(-1000000,1000000), m2 = pll(-1000000,1000000);
	int i;
	for (i=0;i<n;i++) {
		if (cmp(m1,arr[i])) m2=m1,m1=arr[i],t2=t1,t1=i;
		else if (cmp(m2,arr[i])) m2=arr[i],t2=i;
	}
	return (double)(S-m1.h-m2.h)/(1.0/m1.t+1.0/m2.t)<=x;
}

void process() {
	int i;
	double s = 0, e = INF;
	for (i=0;i<300;i++) {
		x = (s+e)/2;
		if (ok()) e=x;
		else s=x;
	}
	printf("%d %d\n",min(t1,t2)+1,max(t1,t2)+1);
}

void input() {
	int i;
	scanf("%d",&n);
	for (i=0;i<n;i++) scanf("%lld",&arr[i].h), S += arr[i].h;
	for (i=0;i<n;i++) scanf("%lld",&arr[i].t);
}

int main() {
	input();
	process();
	return 0;
}

Subtask #1

11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	2648 KB	Output is correct
2	Correct	0 ms	2648 KB	Output is correct
3	Correct	0 ms	2648 KB	Output is correct
4	Correct	0 ms	2648 KB	Output is correct
5	Correct	0 ms	2648 KB	Output is correct
6	Correct	0 ms	2648 KB	Output is correct
7	Correct	0 ms	2648 KB	Output is correct

Subtask #2

22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	2648 KB	Output is correct
2	Correct	7 ms	2648 KB	Output is correct
3	Correct	8 ms	2648 KB	Output is correct
4	Correct	6 ms	2648 KB	Output is correct
5	Correct	10 ms	2648 KB	Output is correct
6	Correct	10 ms	2648 KB	Output is correct
7	Correct	4 ms	2648 KB	Output is correct
8	Correct	10 ms	2648 KB	Output is correct
9	Correct	0 ms	2648 KB	Output is correct

Subtask #3

28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	938 ms	2648 KB	Output is correct
2	Correct	457 ms	2648 KB	Output is correct
3	Correct	311 ms	2648 KB	Output is correct
4	Correct	924 ms	2648 KB	Output is correct
5	Correct	603 ms	2648 KB	Output is correct
6	Correct	606 ms	2648 KB	Output is correct
7	Correct	419 ms	2648 KB	Output is correct
8	Correct	605 ms	2648 KB	Output is correct
9	Correct	612 ms	2648 KB	Output is correct
10	Correct	439 ms	2648 KB	Output is correct
11	Correct	937 ms	2648 KB	Output is correct
12	Correct	356 ms	2648 KB	Output is correct

Subtask #4

39.0 / 39.0

#	결과	실행 시간	메모리	Grader output
1	Correct	945 ms	2648 KB	Output is correct
2	Correct	943 ms	2648 KB	Output is correct
3	Correct	439 ms	2648 KB	Output is correct
4	Correct	669 ms	2648 KB	Output is correct
5	Correct	712 ms	2648 KB	Output is correct
6	Correct	938 ms	2648 KB	Output is correct
7	Correct	313 ms	2648 KB	Output is correct
8	Correct	621 ms	2648 KB	Output is correct
9	Correct	692 ms	2648 KB	Output is correct
10	Correct	945 ms	2648 KB	Output is correct
11	Correct	443 ms	2648 KB	Output is correct
12	Correct	751 ms	2648 KB	Output is correct
13	Correct	622 ms	2648 KB	Output is correct
14	Correct	895 ms	2648 KB	Output is correct
15	Correct	940 ms	2648 KB	Output is correct
16	Correct	654 ms	2648 KB	Output is correct
17	Correct	932 ms	2648 KB	Output is correct