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Submission #369189

# Submission time Handle Problem Language Result Execution time Memory
369189 2021-02-20T19:53:27 Z iliccmarko Sure Bet (CEOI17_sure) C++14
100 / 100
 124 ms 4460 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define endl "\n"
#define INF 1000000000
#define LINF 1000000000000000LL
#define pb push_back
#define all(x) x.begin(), x.end()
#define len(s) (int)s.size()
#define test_case { int t; cin>>t; while(t--)solve(); }
#define single_case solve();
#define line cerr<<"----------"<<endl;
#define ios { ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); cerr.tie(NULL); }
#define mod 1000000007LL
const int N = 1e5 + 50;
double a[N], b[N];
double prefix[N];
int n;



int main()
{
    ios
    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(b+1, b+n+1);
    reverse(a+1, a+n+1);

    for(int i = 1;i<=n;i++) prefix[i] = prefix[i-1] + b[i];
    prefix[n+1] = 1000000000.0;

    double res = 0;
    double sum = 0;

    for(int i = 1;i<=n;i++)
    {
        sum += a[i];
        int ind = lower_bound(prefix+1, prefix+n+2, sum) - (prefix);
        if(ind<=n) res = max(res, sum-(double)i-(double)ind);
    }

    for(int i = 1;i<=n;i++) prefix[i] = prefix[i-1] + a[i];

    sum = 0;

    for(int i = 1;i<=n;i++)
    {
        sum += b[i];
        int ind = lower_bound(prefix+1, prefix+n+2, sum) - (prefix);
        if(ind<=n) res = max(res, sum-(double)i-(double)ind);
    }

    printf("%.4lf", res);





    return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 2 ms 364 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 2 ms 364 KB Output is correct
15 Correct 2 ms 364 KB Output is correct
16 Correct 2 ms 364 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 2 ms 364 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 2 ms 364 KB Output is correct
15 Correct 2 ms 364 KB Output is correct
16 Correct 2 ms 364 KB Output is correct
17 Correct 119 ms 4076 KB Output is correct
18 Correct 107 ms 4204 KB Output is correct
19 Correct 118 ms 4076 KB Output is correct
20 Correct 99 ms 4076 KB Output is correct
21 Correct 108 ms 4460 KB Output is correct
22 Correct 124 ms 4076 KB Output is correct
23 Correct 101 ms 4076 KB Output is correct
24 Correct 100 ms 4076 KB Output is correct
25 Correct 98 ms 4076 KB Output is correct
26 Correct 105 ms 4460 KB Output is correct