oj.uz

Submission #1095889

# Submission time Handle Problem Language Result Execution time Memory
1095889 2024-10-03T11:21:49 Z Omar_Elgedawy Mobile (BOI12_mobile) C++17
0 / 100
 3 ms 512 KB 
#include <bits/stdc++.h>

using namespace std;
#define int long long
#define ld long double
#define F first
#define S second
#define el '\n'
#define cout(x) for(auto v:x)cout<<v<<el
#define coutp(x) for(auto v:x)cout<<v.F<<' '<<v.S<<el
#define cin(x) for(auto &v:x)cin>>v;
#define pb(x) push_back(x)
#define all(x)  x.begin(),x.end()

const int N = 5e3 + 5, M = 1e2 + 5, Mod = 1e9 + 7;
int dx[8] = {1, -1, 0, 0, 1, -1, 1, -1};
int dy[8] = {0, 0, 1, -1, 1, -1, -1, 1};

int nxt()
{
    int x;
    cin >> x;
    return x;
}
ld dist(pair<ld,ld>a,pair<ld,ld>b)
{
    ld d=(a.F-b.F)*(a.F-b.F)-(a.S-b.S)*(a.S-b.S);
    return sqrtl(d);
}
ld midX(pair<ld,ld>a,pair<ld,ld>b)
{
    if(b.F==a.F)return a.F;
    return (b.F*b.F+b.S*b.S-a.F*a.F-a.S*a.S)/(2.0*(b.F-a.F));
}
void solve(int h)
{
    int n,m;
    cin>>n>>m;
    vector<pair<int,int>>v;
    for(int i=0;i<n;i++)
    {
        int x,y;
        cin>>x>>y;
        v.push_back({x,y});
    }
    ld mx=0;
    for(int i=0;i<n;i++)
    {
        for(int j=i+1;j<n;j++)
        {
            ld mid=midX(v[i],v[j]);
            if(mid<0)mid=0;
            if(mid>m)mid=m;
            // cout<<mid<<el;
            mx=max({mx,dist({mid,0},v[i]),dist({mid,0},v[j])});
        }
    }
    cout<<fixed<<setprecision(3)<<mx<<el;
}

int32_t main()
{
    #ifndef ONLINE_JUDGE
    freopen("input.txt", "r" , stdin);
    freopen("output.txt", "w", stdout);
    // freopen("feast.in", "r", stdin);
    // freopen("feast.out", "w", stdout);
    #endif
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int tc = 1;
    // cin >> tc;
    for (int i = 1; i <= tc; i++)solve(i);
    return 0;
}

Compilation message

mobile.cpp: In function 'int32_t main()':
mobile.cpp:64:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |     freopen("input.txt", "r" , stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
mobile.cpp:65:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #2
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 348 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 348 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 348 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #5
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 348 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 348 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #12
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 512 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 348 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 348 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #16
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #19
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #20
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 348 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -