제출 #970003

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
970003		Aiperiii	Balloons (CEOI11_bal)	C++14	10 / 100	2050 ms	6260 KiB

bal

#include <bits/stdc++.h>
#define int long long
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
using namespace std;
signed main(){
    ios_base::sync_with_stdio();
    cin.tie(0);cout.tie(0);
    int n;
    cin>>n;
    vector <int> r(n),x(n);
    vector <long double> ans;
    for(int i=0;i<n;i++)cin>>x[i]>>r[i];
    ans.pb(r[0]);
    vector <long double> R;
    R.pb(r[0]);
    for(int i=1;i<n;i++){
        long double res=r[i];
        for(int j=0;j<i;j++){
            int a=(x[i]-x[j])*(x[i]-x[j]);
            int b=4*R[j];
            res=min(res,(long double)a/b);
        }
        R.pb(res);
        ans.pb(res);
    }
    for(auto x : ans)cout<<fixed<<setprecision(3)<<x<<"\n";
}
/*
 
3
0 9
8 1
13 7
 
*/

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• Subtask 2: 10 / 10
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• Subtask 10: 0 / 10