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Submission #788309

# Submission time Handle Problem Language Result Execution time Memory
788309 2023-07-20T05:40:08 Z math_pi Balloons (CEOI11_bal) C++14
10 / 100
 167 ms 10316 KB 
#include<bits/stdc++.h>
using namespace std;

long double calc(pair<long double, long double> p, long double x) {
    return (p.first - x) * (p.first - x) / (4 * p.second);
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);


    int n;
    cin >> n;

    vector<long double> res(n);
    stack<pair<long double, long double>> st;
    for(int i=0; i<n; i++) {
        long double x, r;
        cin >> x >> r;
        long double max_r = r;
        while(!st.empty()) {
            pair<long double, long double> last = st.top();
            long double last_r = calc(last, x);

            max_r = min(max_r, last_r);

            if(max_r >= last.second) {
                st.pop();
                continue;
            } else break;
        }
        
        cout << fixed << setprecision(3) << max_r << '\n';
        st.push({x, r});
    }

    
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB 5th numbers differ - expected: '17.1630000000', found: '4.3710000000', error = '12.7920000000'
2 Halted 0 ms 0 KB -

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 3rd numbers differ - expected: '0.0420000000', found: '2.0830000000', error = '2.0410000000'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 340 KB 3rd numbers differ - expected: '121.0000000000', found: '120.0180000000', error = '0.9820000000'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 17 ms 1344 KB 3rd numbers differ - expected: '211.0000000000', found: '210.0110000000', error = '0.9890000000'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 42 ms 2380 KB 3rd numbers differ - expected: '15396.0000000000', found: '9489.3930000000', error = '5906.6070000000'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 87 ms 5400 KB 3rd numbers differ - expected: '7936.0000000000', found: '6084.6240000000', error = '1851.3760000000'
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 98 ms 6196 KB 6th numbers differ - expected: '5053.0000000000', found: '5052.0000000000', error = '1.0000000000'
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 144 ms 8596 KB 3rd numbers differ - expected: '1872.0000000000', found: '1871.0010000000', error = '0.9990000000'
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 167 ms 10316 KB 3rd numbers differ - expected: '2960.0000000000', found: '2959.0010000000', error = '0.9990000000'
2 Halted 0 ms 0 KB -