#include <bits/stdc++.h>
#define int long long
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
#define pb push_back
using namespace std;
signed main(){
int n;
cin>>n;
vector <long double> a(n),b(n);
for(int i=0;i<n;i++){
cin>>a[i]>>b[i];
a[i]--;b[i]--;
}
sort(all(a));sort(all(b));
reverse(all(a));reverse(all(b));
long double p1=0,p2=0;
long double sum1=0,sum2=0;
long double ans=0;
while(p1<n){
sum1+=a[p1];
p1++;
while(min(sum1-p2,sum2-p1)<=min(sum1-p2-1,sum2+b[p2]-p1) && p2<n){
sum2+=b[p2];
p2++;
}
ans=max(ans,min(sum1-p2,sum2-p1));
}
cout<<fixed<<setprecision(4)<<ans<<"\n";
}
/*
4
1.4 3.7
1.2 2
1.6 1.4
1.9 1.5
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
2 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
444 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
2 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
444 KB |
Output is correct |
17 |
Correct |
106 ms |
4424 KB |
Output is correct |
18 |
Correct |
108 ms |
4828 KB |
Output is correct |
19 |
Correct |
108 ms |
4712 KB |
Output is correct |
20 |
Correct |
106 ms |
4828 KB |
Output is correct |
21 |
Correct |
121 ms |
5092 KB |
Output is correct |
22 |
Correct |
106 ms |
4880 KB |
Output is correct |
23 |
Correct |
106 ms |
4708 KB |
Output is correct |
24 |
Correct |
114 ms |
4932 KB |
Output is correct |
25 |
Correct |
123 ms |
4692 KB |
Output is correct |
26 |
Correct |
122 ms |
5228 KB |
Output is correct |