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답안 #865512

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
865512 2023-10-24T09:16:19 Z vjudge1 Sure Bet (CEOI17_sure) C++17
0 / 100
 1 ms 2396 KB 
/// tree bends in youth
/// 24  .10.2023
/// success is doing same thing in every single day!!!
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define all(x) x.begin(), x.end()
#define F first
#define S second
using namespace std;
const ll N =2e5+ 5;
const ll NN =2e6 + 5;
const ll INF = -1e1;
const ll MOD = 1e9 + 7;
const ll LG = 18;
const ll k = 316;
int n;
double a[N],b[N],pl[N],pr[N];
void solve(){
    cin >> n;
    for(int i = 1;i <= n;i++){
        cin >> a[i] >> b[i];
    }
    sort(a + 1,a + n + 1);
    sort(b + 1,b + n + 1);
    reverse(a + 1,a+  n + 1);
    reverse(b + 1,b + n + 1);
    for(int i = 1;i <= n;i++){
        pr[i] = pr[i - 1] + b[i];
        pl[i] = pl[i - 1] + a[i];
    }
    double ans = 0;
    for(int i = 1;i <= n;i++){
        if(pl[i] < i)break;
        int l = 1,r = n;
        while(l < r){
            int mid = (l + r) / 2;
            if(pl[i] < double(i + mid))r = mid - 1;
            double sum = i + mid;
            double res = min(pl[i] - sum,pr[mid] -sum );
            if(res < ans)r = mid;
            else l = mid + 1;
            ans=  max(ans,res);
        }
    }
    cout <<fixed << setprecision(9) <<ans;
}
main (){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
//    freopen("input.txt","r",stdin);
//    freopen("output.txt","w",stdout);
    ll abd= 1;
//    cin >> abd;
    for(ll i = 1;i <= abd;i++){
//        cout << "Case " << i << ":\n";
        solve();
    }
}

Compilation message

sure.cpp:48:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   48 | main (){
      | ^~~~

Subtask #1
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 2396 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 2396 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 2396 KB Output isn't correct
2 Halted 0 ms 0 KB -