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Submission #1027329

# Submission time Handle Problem Language Result Execution time Memory
1027329 2024-07-19T03:44:37 Z coldbr3w Sure Bet (CEOI17_sure) C++17
0 / 100
 0 ms 2396 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define pll pair<long long, long long>
#define pb push_back
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
 
const ll N = 2e5 + 100;
const ll inf = 1e18;
const ll mod = 1e9 + 7;
const ll block = 480;
double a[N], b[N];
ll n;
void to_thic_cau(){  
    cin >> n;
    for(int i = 1; i <= n;i++) cin >> a[i] >> b[i];
    sort(a + 1, a + n + 1); reverse(a + 1, a + n + 1);
    sort(b + 1, b + n + 1); reverse(b + 1, b + n + 1);
    for(int i = 1; i <= n;i++) a[i] += a[i-1];
    for(int i = 1; i <= n;i++) b[i] += b[i-1];
    double res = 0;
    for(int i = 0; i <= n;i++){
        ll l = 0, r = n, pos = -1;
        while(l <= r){
            ll mid = (l + r) / 2;
            if(b[pos] >= a[i]){
                pos = mid;
                r = mid - 1;
            }
            else l = mid + 1;
        }
        if(pos == -1) continue;
        res = max(res, min(a[i], b[pos]) - 1.00 * (i + pos));
    }
    for(int i = 0; i <= n;i++){
        ll l = 0, r = n, pos = -1;
        while(l <= r){
            ll mid = (l + r) / 2;
            if(a[pos] >= b[i]){
                pos = mid;
                r = mid - 1;
            }
            else l = mid + 1;
        }
        if(pos == -1) continue;
        res = max(res, min(b[i], a[pos]) - 1.00 * (i + pos));
    }
    cout << fixed << setprecision(4) << res << '\n';
}
 
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll tc = 1;
    //cin >> tc;
    while(tc--) to_thic_cau();
}

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Incorrect 0 ms 2396 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Incorrect 0 ms 2396 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Incorrect 0 ms 2396 KB Output isn't correct
3 Halted 0 ms 0 KB -