답안 #19129

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
19129	2016-02-18T16:25:00 Z	eaststar	Be Two Bees (OJUZ10_b2b)	C++14	11 / 100	62 ms	2644 KB

b2b

#include <stdio.h>
int n,ai=1,aj=2;
long long h[100010],t[100010],H;
int chk(double m){
    int i,mi,mj;
    double s,m1=0,m2=0;
    for(i=1;i<=n;++i){
        s=h[i]+m/t[i];
        if(m1<s)m2=m1,mj=mi,m1=s,mi=i;
        else if(m2<s)m2=s,mj=i;
    }
    if(m1+m2>H)ai=mi,aj=mj;
    return m1+m2>H;
}
double f(){
    double x=H-h[ai]-h[aj],y=1.0/t[ai]+1.0/t[aj];
    return x/y;
}
int main(){
    int i;
    scanf("%d",&n);
    for(i=1;i<=n;++i)scanf("%lld",h+i),H+=h[i];
    for(i=1;i<=n;++i)scanf("%lld",t+i);
    double l=0,r=1e10,m;
    while((r-l)/r>1e-8){
        m=(l+r)/2;
        if(chk(m))r=f();
        else l=m;
    }
    if(ai>aj)ai^=aj^=ai^=aj;
    printf("%d %d",ai,aj);
    return 0;
}

Subtask #1

11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	2644 KB	Output is correct
2	Correct	0 ms	2644 KB	Output is correct
3	Correct	0 ms	2644 KB	Output is correct
4	Correct	0 ms	2644 KB	Output is correct
5	Correct	0 ms	2644 KB	Output is correct
6	Correct	0 ms	2644 KB	Output is correct
7	Correct	0 ms	2644 KB	Output is correct

Subtask #2

0.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	2644 KB	Output is correct
2	Correct	0 ms	2644 KB	Output is correct
3	Correct	0 ms	2644 KB	Output is correct
4	Incorrect	0 ms	2644 KB	Output isn't correct
5	Correct	0 ms	2644 KB	Output is correct
6	Correct	0 ms	2644 KB	Output is correct
7	Correct	0 ms	2644 KB	Output is correct
8	Incorrect	0 ms	2644 KB	Output isn't correct
9	Correct	0 ms	2644 KB	Output is correct

Subtask #3

0.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	27 ms	2644 KB	Output is correct
2	Correct	36 ms	2644 KB	Output is correct
3	Incorrect	53 ms	2644 KB	Output isn't correct
4	Correct	15 ms	2644 KB	Output is correct
5	Correct	49 ms	2644 KB	Output is correct
6	Correct	52 ms	2644 KB	Output is correct
7	Incorrect	45 ms	2644 KB	Output isn't correct
8	Correct	34 ms	2644 KB	Output is correct
9	Correct	51 ms	2644 KB	Output is correct
10	Incorrect	52 ms	2644 KB	Output isn't correct
11	Incorrect	53 ms	2644 KB	Output isn't correct
12	Incorrect	27 ms	2644 KB	Output isn't correct

Subtask #4

0.0 / 39.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	2644 KB	Output is correct
2	Incorrect	59 ms	2644 KB	Output isn't correct
3	Incorrect	61 ms	2644 KB	Output isn't correct
4	Incorrect	50 ms	2644 KB	Output isn't correct
5	Correct	55 ms	2644 KB	Output is correct
6	Correct	37 ms	2644 KB	Output is correct
7	Correct	52 ms	2644 KB	Output is correct
8	Correct	16 ms	2644 KB	Output is correct
9	Incorrect	41 ms	2644 KB	Output isn't correct
10	Correct	36 ms	2644 KB	Output is correct
11	Correct	51 ms	2644 KB	Output is correct
12	Incorrect	54 ms	2644 KB	Output isn't correct
13	Incorrect	52 ms	2644 KB	Output isn't correct
14	Correct	62 ms	2644 KB	Output is correct
15	Incorrect	55 ms	2644 KB	Output isn't correct
16	Incorrect	52 ms	2644 KB	Output isn't correct
17	Incorrect	54 ms	2644 KB	Output isn't correct