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Submission #840900

# Submission time Handle Problem Language Result Execution time Memory
840900 2023-08-31T20:30:31 Z PagodePaiva Balloons (CEOI11_bal) C++17
100 / 100
 255 ms 8544 KB 
#include<bits/stdc++.h>
#define N 200010
#define int long long
#define double long double

using namespace std;

double res[N];

int32_t main(){
    int n;
    cin >> n;
    stack <pair <double, double>> s;
    s.push({0, 0});

    cout << fixed << setprecision(3);

    for(int i = 1;i <= n;i++){
        double a, b;
        cin >> a >> b;

        while(!s.empty()){
            auto [x, y] = s.top();
            // cout << x << ' ' << y << '\n';
            if(y == 0){
                res[i] = b;
                break;
            }

            res[i] = min(b, ((a-x)*(a-x))/(4*y));
            b = min(b, res[i]);

            if(res[i] >= y){
                s.pop();
            }

            else{
                // cout << y << "\n";
                break;
            }
        }

        s.push({a, res[i]});
    }

    for(int i = 1;i <= n;i++){
        cout << res[i] << '\n';
    }
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 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
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB 505 numbers

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 340 KB 2000 numbers

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 752 KB 20000 numbers

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 1732 KB 50000 numbers
2 Correct 59 ms 2364 KB 49912 numbers

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 119 ms 2940 KB 100000 numbers

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 137 ms 3440 KB 115362 numbers
2 Correct 145 ms 5260 KB 119971 numbers

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 181 ms 4208 KB 154271 numbers
2 Correct 255 ms 8544 KB 200000 numbers

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 224 ms 5044 KB 200000 numbers
2 Correct 241 ms 8536 KB 199945 numbers