oj.uz

Submission #768159

# Submission time Handle Problem Language Result Execution time Memory
768159 2023-06-27T15:38:28 Z vjudge1 Balloons (CEOI11_bal) C++17
20 / 100
 381 ms 9332 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define double long double
const int N=2e5;
int n;
struct dt{
    double x,r;
};
double Ri(dt b, dt c){
    return (b.x-c.x)*(b.x-c.x)/(4*c.r);
}
dt a[N+10];
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    cin>>n;
    for (int i=1;i<=n;i++)
        cin>>a[i].x>>a[i].r;
    int mx =1;
    cout <<fixed<<setprecision(9)<<a[1].r<<endl;
    for (int i=2;i<=n;i++){
        double R = a[i].r;
        R = min(R,Ri(a[i],a[mx]));
        if (R != a[i].r)
            R-=0.0000000001;
        a[i].r=R;
        if (a[i].x+a[i].r>a[mx].x+a[mx].r) mx =i;
        cout <<fixed<<setprecision(9)<<R<<endl;

    }

}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB 10 numbers

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB 2 numbers

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 KB 13th numbers differ - expected: '2.3960000000', found: '6.2546948360', error = '3.8586948360'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 340 KB 114th numbers differ - expected: '39.0180000000', found: '56.0000000000', error = '16.9820000000'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 39 ms 1116 KB 196th numbers differ - expected: '100.7250000000', found: '111.0000000000', error = '10.2750000000'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 96 ms 2548 KB 14044th numbers differ - expected: '0.4860000000', found: '0.5201798820', error = '0.0341798820'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 198 ms 4820 KB 7309th numbers differ - expected: '0.3220000000', found: '0.7861043780', error = '0.4641043780'
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 222 ms 5628 KB 4790th numbers differ - expected: '0.2950000000', found: '0.8602612200', error = '0.5652612200'
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 306 ms 7360 KB 1734th numbers differ - expected: '1856.0220000000', found: '1865.0000000000', error = '8.9780000000'
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 381 ms 9332 KB 2716th numbers differ - expected: '22.1690000000', found: '43.0000000000', error = '20.8310000000'
2 Halted 0 ms 0 KB -