oj.uz

Submission #480335

# Submission time Handle Problem Language Result Execution time Memory
480335 2021-10-15T17:15:29 Z Deepesson Balloons (CEOI11_bal) C++17
100 / 100
 267 ms 5480 KB 
#include <bits/stdc++.h>
using ld = long double;
typedef std::pair<ld,ld> pll;
ld raio(ld d,ld r2){
    return (d*d)/(4*r2);
}
int main()
{
    std::ios::sync_with_stdio(false);
    std::cin.tie(0);
    std::cout.tie(0);
    int N;
    std::cin>>N;
    std::stack<pll> stack;
    for(int _ = 0;_!=N;++_){
        ld x,r;
        std::cin>>x>>r;
        while(stack.size()){
            ld l = raio(stack.top().first-x,stack.top().second);
            l=std::min(l,r);
            if(l>=stack.top().second){
                stack.pop();
                r=std::min(l,r);
            }else {
                r=l;
                break;
            }
        }
        stack.push({x,r});
        std::cout<<std::fixed<<std::setprecision(3)<<r<<"\n";
    }
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB 10 numbers

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB 2 numbers

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB 505 numbers

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 332 KB 2000 numbers

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 456 KB 20000 numbers

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 960 KB 50000 numbers
2 Correct 67 ms 1572 KB 49912 numbers

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 135 ms 1476 KB 100000 numbers

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 158 ms 1560 KB 115362 numbers
2 Correct 156 ms 3396 KB 119971 numbers

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 208 ms 1868 KB 154271 numbers
2 Correct 242 ms 5480 KB 200000 numbers

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 267 ms 1868 KB 200000 numbers
2 Correct 244 ms 5444 KB 199945 numbers