#include<bits/stdc++.h>
using namespace std ;
const int maxn = 1e5 + 5 ;
int n ;
double x[maxn], y[maxn], p_x[maxn], p_y[maxn] ;
bool cmp(double a, double b){ return a > b ; }
int main(){
cin >> n ;
for(int i = 1 ; i <= n ; i++) cin >> x[i] >> y[i] ;
sort(x + 1, x + 1 + n, cmp) ; sort(y + 1, y + 1 + n, cmp) ;
for(int i = 1 ; i <= n ; i++) p_x[i] = p_x[i-1] + x[i], p_y[i] = p_y[i-1] + y[i] ;
double ans = 0 ;
for(int i = 1 ; i <= n ; i++){
int ini = 1, fim = n, mid, best = 0 ; double mn = p_x[i] ;
while(ini <= fim){
mid = (ini + fim)>>1 ;
if(abs((p_x[i])-(p_y[mid])) <= mn){
mn = abs((p_x[i])-(p_y[mid])) ;
best = mid ;
}
if(p_x[i] <= p_y[mid]) fim = mid - 1 ;
else ini = mid + 1 ;
}
if(best) ans = max(ans, min(p_x[i] - (double)best - (double)i, p_y[best] - (double)i - (double)best)) ;
}
cout << fixed << setprecision(4) << ans << "\n" ;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
2 ms |
340 KB |
Output is correct |
| 13 |
Correct |
2 ms |
340 KB |
Output is correct |
| 14 |
Correct |
2 ms |
340 KB |
Output is correct |
| 15 |
Correct |
2 ms |
340 KB |
Output is correct |
| 16 |
Correct |
2 ms |
340 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
2 ms |
340 KB |
Output is correct |
| 13 |
Correct |
2 ms |
340 KB |
Output is correct |
| 14 |
Correct |
2 ms |
340 KB |
Output is correct |
| 15 |
Correct |
2 ms |
340 KB |
Output is correct |
| 16 |
Correct |
2 ms |
340 KB |
Output is correct |
| 17 |
Correct |
146 ms |
3324 KB |
Output is correct |
| 18 |
Correct |
135 ms |
3404 KB |
Output is correct |
| 19 |
Correct |
138 ms |
3388 KB |
Output is correct |
| 20 |
Correct |
162 ms |
3296 KB |
Output is correct |
| 21 |
Correct |
163 ms |
3452 KB |
Output is correct |
| 22 |
Correct |
134 ms |
3388 KB |
Output is correct |
| 23 |
Correct |
139 ms |
3316 KB |
Output is correct |
| 24 |
Correct |
139 ms |
3412 KB |
Output is correct |
| 25 |
Correct |
138 ms |
3312 KB |
Output is correct |
| 26 |
Correct |
171 ms |
3424 KB |
Output is correct |
