oj.uz

Submission #738441

# Submission time Handle Problem Language Result Execution time Memory
738441 2023-05-08T18:57:09 Z LKR__enjoyer Mobile (BOI12_mobile) C++17
0 / 100
 1000 ms 57520 KB 
#include <iostream>
#include<bits/stdc++.h>
#define pb push_back
#define f first
#define s second
typedef long long ll;
typedef long double ld;
using namespace std;
int n,l;
vector<pair<int,int>> pkt;
bool spr(long double rad);
long double bin(ld lo,ld hi)
{
    for(int i=0;i<100;i++)
    {
        ld mid=lo+(hi-lo)/2; 
        if(spr(mid))hi=mid; else lo=mid;
    }
    return lo;
}

int main()
{ 
    cin>>n>>l;
    for(int i=0;i<n;i++)
    {int a,b; cin>>a>>b;
    pkt.pb({a,b});    
    }
    cout<<setprecision(9)<<bin(0,(ld)(2*l));
    
    return 0;
}
bool spr(ld rad){
vector<pair<ld,ld>> pts={};
for(auto p : pkt)
{
    ld x=(ld)p.f,y=(ld)p.s;
    if(y>rad)continue; 
    ld x1=x-sqrt(rad*rad-y*y),x2=x+sqrt(rad*rad-y*y); 
    pts.pb({x1,x2});
}
if(pts[0].f>0||pts[pts.size()-1].s<(ld)l)return 0;    
for(int i=1;i<pts.size();i++)
if(pts[i].f>pts[i-1].s)return 0;
    
return 1;    
}

Compilation message

mobile.cpp: In function 'bool spr(ld)':
mobile.cpp:43:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long double, long double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 | for(int i=1;i<pts.size();i++)
      |             ~^~~~~~~~~~~

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 540 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 17 ms 724 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 17 ms 724 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 6 ms 900 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 77 ms 7432 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 250 ms 5052 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 415 ms 8096 KB Output is correct
2 Incorrect 409 ms 7892 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 469 ms 8484 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 466 ms 8488 KB Output is correct
2 Incorrect 454 ms 8400 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #12
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1083 ms 36420 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1079 ms 36544 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1070 ms 54408 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1079 ms 54604 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #16
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1068 ms 55112 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1061 ms 55308 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1074 ms 55908 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #19
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1078 ms 55804 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #20
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1068 ms 57484 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1062 ms 57520 KB Time limit exceeded
2 Halted 0 ms 0 KB -