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Submission #1022468

# Submission time Handle Problem Language Result Execution time Memory
1022468 2024-07-13T14:39:57 Z lucaskojima Balloons (CEOI11_bal) C++17
100 / 100
 139 ms 5520 KB 
#include "bits/stdc++.h"
#define ff first
#define ss second
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define sz(x) (int)(x).size()

using namespace std;
using ll = long long;
using pii = pair<int, int>;

const char nl = '\n';
const ll LINF = 0x3f3f3f3f3f3f3f3f;
const int INF = 0x3f3f3f3f;

int main(){
	ios::sync_with_stdio(0), cin.tie(0);

	int n; cin >> n;

	stack<pair<double, double>>st;

	for(int i=0; i<n; i++){
		double x, r; cin >> x >> r;

		while(!st.empty()){
			auto [x1, r1]=st.top();
			r=min(r, (x-x1)*(x-x1)/(4*r1));
			if(r>=r1) st.pop();
			else break;
		}

		st.push({x, r});
		cout << fixed << setprecision(3) << r << nl;
	}
	return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB 10 numbers

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB 2 numbers

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB 505 numbers

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 348 KB 2000 numbers

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 736 KB 20000 numbers

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 1576 KB 50000 numbers
2 Correct 31 ms 1628 KB 49912 numbers

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 2896 KB 100000 numbers

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 3156 KB 115362 numbers
2 Correct 86 ms 3648 KB 119971 numbers

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 106 ms 4176 KB 154271 numbers
2 Correct 126 ms 5520 KB 200000 numbers

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 139 ms 4580 KB 200000 numbers
2 Correct 138 ms 5520 KB 199945 numbers