Submission #1195908

#	Time	Username	Problem	Language	Result	Execution time	Memory
1195908		peteza	Balloons (CEOI11_bal)	C++17	100 / 100	119 ms	1996 KiB

bal

#include <bits/stdc++.h>
using namespace std;
using db = double;
using pdd = pair<db, db>;

deque<pdd> stk;
int n;
db x, r;

db getrad(pdd xr, db xtwo) {
    return (xr.first - xtwo) * (xr.first - xtwo) / 4 / xr.second;
}

int main() {
    cin.tie(0) -> sync_with_stdio(0);
    cin >> n;
    cout << fixed << setprecision(3);
    while(n--) {
        cin >> x >> r;
        while(!stk.empty()) {
            auto res = getrad(stk.back(), x);
            r = min(r, res);
            if(stk.back().second <= r) stk.pop_back();
            else break;
        }
        stk.emplace_back(x, r);
        cout << r << '\n';
        
    }
}

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