Submission #1094860

#	Time	Username	Problem	Language	Result	Execution time	Memory
1094860		Kodik	Balloons (CEOI11_bal)	C++17	30 / 100	134 ms	4712 KiB

bal

#include <bits/stdc++.h>
using namespace std;
#define ss second
#define ff first
typedef long long ll;
typedef long double ld;
#define int ll
 
 
 
 
ld check(ld lr, ld nx, ld lx){
    ld up = abs(nx-lx);
    ld denominator = 4*lr;
    return (up*up)/denominator;
}
 
 
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n;
    cin >> n;
    vector<ld> answer(n);
    stack<pair<ld,ld>> st;
    for(int i = 0; i < n; ++i){
        ld cor, mr; 
        cin >> cor >> mr;
        if(st.empty()){
            answer[i] = mr;
            st.push({mr,cor});
        }else{
            while(true){
                auto &[lr, lx] = st.top();
                mr = min(mr, check(lr,cor,lx));
                if(mr>=lr){
                    st.pop();
                    if(st.empty()){
                        answer[i] = mr;
                        st.push({mr,cor});
                        break;
                    }
                }else{
                    st.push({mr,cor});
                    answer[i] = mr;
                    break;
                }
            }
        }
    }
    for(int i = 0; i < n; ++i){
        cout << answer[i] << '\n';
    }
    return 0;   
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10