QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#364604#6749. TargetAtmizz#AC ✓1ms3952kbC++20932b2024-03-24 15:35:252024-03-24 15:35:28

Judging History

你现在查看的是最新测评结果

  • [2024-03-24 15:35:28]
  • 评测
  • 测评结果:AC
  • 用时:1ms
  • 内存:3952kb
  • [2024-03-24 15:35:25]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
const double eps=1e-4;

//操作1: a/2
//操作2: a/2+0.5 
//构造结果 a*(1/2)^n + (1/2)^m + (1/2)^k +.... (n为步数  m,k...<=n) 
//枚举步数,然后看看能不能由a构造出b即可 
int main(){
    double a,b;
    cin>>a>>b;
    for(int i=1;i<=20;i++){
        double ans=a*pow(0.5,i);
        deque<int> step;
        for(int j=1;j<=i;j++){
            if(ans+pow(0.5,j)<b||fabs(ans+pow(0.5,j)-b)<=eps){
                ans+=pow(0.5,j);
                step.push_front(j);
            }
        }
        if(fabs(ans-b)<=eps){
            //输出答案
            for(int j=1;j<=i;j++){
                //第j步将会是i-j+1次幂
                if(step.size()>0&&step.front()==i-j+1){
                    cout<<2;
                    step.pop_front();
                }else cout<<1;
            } 
            return 0;
        }
    }
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 1ms
memory: 3788kb

input:

0.5 0.25

output:

1

result:

ok ok

Test #2:

score: 0
Accepted
time: 1ms
memory: 3752kb

input:

1 0.75

output:

12

result:

ok ok

Test #3:

score: 0
Accepted
time: 1ms
memory: 3824kb

input:

1 0

output:

11111111111111

result:

ok ok

Test #4:

score: 0
Accepted
time: 1ms
memory: 3720kb

input:

0.361954 0.578805

output:

111212112

result:

ok ok

Test #5:

score: 0
Accepted
time: 1ms
memory: 3760kb

input:

0.144888 0.140086

output:

122222111211

result:

ok ok

Test #6:

score: 0
Accepted
time: 1ms
memory: 3760kb

input:

0.514397 0.969399

output:

21111122222

result:

ok ok

Test #7:

score: 0
Accepted
time: 0ms
memory: 3912kb

input:

0.887873 0.402213

output:

212211221

result:

ok ok

Test #8:

score: 0
Accepted
time: 1ms
memory: 3740kb

input:

0.152004 0.176414

output:

21221211

result:

ok ok

Test #9:

score: 0
Accepted
time: 1ms
memory: 3752kb

input:

0.401831 0.860762

output:

2111222122

result:

ok ok

Test #10:

score: 0
Accepted
time: 1ms
memory: 3796kb

input:

0.580629 0.869474

output:

12222122

result:

ok ok

Test #11:

score: 0
Accepted
time: 1ms
memory: 3756kb

input:

0.138673 0.508844

output:

2111112

result:

ok ok

Test #12:

score: 0
Accepted
time: 1ms
memory: 3780kb

input:

0.027182 0.263243

output:

22122111121

result:

ok ok

Test #13:

score: 0
Accepted
time: 0ms
memory: 3824kb

input:

0.081714 0.212216

output:

212112212211

result:

ok ok

Test #14:

score: 0
Accepted
time: 1ms
memory: 3916kb

input:

0.562775 0.388603

output:

222122111221

result:

ok ok

Test #15:

score: 0
Accepted
time: 1ms
memory: 3816kb

input:

0.112949 0.147503

output:

2221211211

result:

ok ok

Test #16:

score: 0
Accepted
time: 1ms
memory: 3832kb

input:

0.800247 0.150903

output:

211212211211

result:

ok ok

Test #17:

score: 0
Accepted
time: 1ms
memory: 3952kb

input:

0.300103 0.584619

output:

221212112

result:

ok ok

Test #18:

score: 0
Accepted
time: 1ms
memory: 3952kb

input:

0.844720 0.070148

output:

2221112111

result:

ok ok

Test #19:

score: 0
Accepted
time: 1ms
memory: 3772kb

input:

0.573320 0.123035

output:

222122222111

result:

ok ok

Test #20:

score: 0
Accepted
time: 1ms
memory: 3896kb

input:

0.467281 0.231366

output:

122122211

result:

ok ok

Test #21:

score: 0
Accepted
time: 1ms
memory: 3768kb

input:

0.264769 0.373434

output:

211222222121

result:

ok ok

Test #22:

score: 0
Accepted
time: 0ms
memory: 3776kb

input:

0.689729 0.570712

output:

11112112112

result:

ok ok

Test #23:

score: 0
Accepted
time: 1ms
memory: 3916kb

input:

0.747218 0.312573

output:

1111111112121

result:

ok ok

Test #24:

score: 0
Accepted
time: 1ms
memory: 3788kb

input:

0.215052 0.203677

output:

21111212211

result:

ok ok

Test #25:

score: 0
Accepted
time: 1ms
memory: 3896kb

input:

0.607834 0.733102

output:

1222122212

result:

ok ok

Test #26:

score: 0
Accepted
time: 0ms
memory: 3752kb

input:

0.516860 0.252876

output:

211111121

result:

ok ok

Test #27:

score: 0
Accepted
time: 1ms
memory: 3896kb

input:

0.955285 0.457773

output:

121121212221

result:

ok ok

Test #28:

score: 0
Accepted
time: 1ms
memory: 3904kb

input:

0.156178 0.353262

output:

222112122121

result:

ok ok

Test #29:

score: 0
Accepted
time: 1ms
memory: 3748kb

input:

0.398701 0.040258

output:

12112121111

result:

ok ok

Test #30:

score: 0
Accepted
time: 0ms
memory: 3760kb

input:

0.973859 0.000184

output:

111111111111

result:

ok ok

Test #31:

score: 0
Accepted
time: 1ms
memory: 3800kb

input:

0.882213 0.556709

output:

222112221112

result:

ok ok

Test #32:

score: 0
Accepted
time: 0ms
memory: 3760kb

input:

0.263822 0.460984

output:

11112212221

result:

ok ok

Test #33:

score: 0
Accepted
time: 1ms
memory: 3752kb

input:

0.443432 0.034841

output:

22211121111

result:

ok ok