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Submission #469306

# Submission time Handle Problem Language Result Execution time Memory
469306 2021-08-31T11:41:38 Z Autron Balloons (CEOI11_bal) C++14
100 / 100
 777 ms 6604 KB 
#include <bits/stdc++.h>
using namespace std;

int main(){
	int n;
	cin>>n;
	stack<pair<double, double>> s;
	for(int i=1;i<=n;++i){
		double x, r;
		cin>>x>>r;
		while(!s.empty()){
			double x1, r1;
			tie(x1, r1)=s.top();
			double val=((x1-x)*(x1-x))/(4*r1);
			r=min(r, val);
			if(r>=r1) s.pop();
			else break;
		}
		s.push({x, r});
		cout<<fixed<<setprecision(9)<<r<<"\n";
	}
	return 0;
}

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 2 ms 204 KB 505 numbers

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 204 KB 2000 numbers

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 452 KB 20000 numbers

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 191 ms 1160 KB 50000 numbers
2 Correct 207 ms 1756 KB 49912 numbers

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 408 ms 1896 KB 100000 numbers

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 460 ms 2116 KB 115362 numbers
2 Correct 461 ms 4036 KB 119971 numbers

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 599 ms 2660 KB 154271 numbers
2 Correct 775 ms 6596 KB 200000 numbers

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 766 ms 3044 KB 200000 numbers
2 Correct 777 ms 6604 KB 199945 numbers