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Submission #307996

# Submission time Handle Problem Language Result Execution time Memory
307996 2020-09-29T17:39:46 Z tengiz05 Rice Hub (IOI11_ricehub) C++17
100 / 100
 22 ms 2176 KB 
#include "ricehub.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 1e5+5;
int a[N], n;
long long b;
bool check(int cnt){
	//two pointers?
	if(cnt == 1){
		return true;
	}
	int l=0, r=cnt-1;
	long long suml = 0, sumr = 0;
	long long m = a[(cnt-1)/2];
	for(int i=0; i<cnt/2; i++)suml += m-a[i];
	for(int i=cnt/2;i<cnt;i++)sumr += a[i]-m;
	
	bool flag = false;
	while(true){
	//	cout << suml << ' ' << sumr << '\n';
		if(b >= suml + sumr)flag = true;
		
		l++, r++;
		int median = l + (cnt-1)/2;
		if(r >= n)break;
		suml -= a[median-1]-a[l-1];
		suml += ((cnt-1)/2)*(a[median]-a[median-1]);
		sumr -= ((cnt)/2)*(a[median]-a[median-1]);
		sumr += a[r]-a[median];
	}
	return flag;
}
int besthub(int R, int L, int X[], long long B){
	n = R;
	b = B;
	for(int i=0;i<n;i++)a[i] = X[i];
	int l=0, r=R+1;
//	cout << check(2) << '\n';
	while(l+1<r){
		int mid = (l+r)/2;
		if(check(mid)){
			l = mid;
		}else {
			r = mid;
		}
	}
	return l;
}

/*

3 20 0
1
2
4

1

*/

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 0 ms 288 KB Output is correct
16 Correct 1 ms 256 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 0 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 0 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 324 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 512 KB Output is correct
2 Correct 5 ms 640 KB Output is correct
3 Correct 19 ms 2176 KB Output is correct
4 Correct 19 ms 2176 KB Output is correct
5 Correct 10 ms 1024 KB Output is correct
6 Correct 10 ms 1016 KB Output is correct
7 Correct 17 ms 1920 KB Output is correct
8 Correct 17 ms 1920 KB Output is correct
9 Correct 9 ms 1024 KB Output is correct
10 Correct 9 ms 1024 KB Output is correct
11 Correct 21 ms 2168 KB Output is correct
12 Correct 21 ms 2176 KB Output is correct
13 Correct 12 ms 1152 KB Output is correct
14 Correct 10 ms 1144 KB Output is correct
15 Correct 17 ms 1792 KB Output is correct
16 Correct 16 ms 1664 KB Output is correct
17 Correct 19 ms 1920 KB Output is correct
18 Correct 22 ms 1912 KB Output is correct
19 Correct 20 ms 2040 KB Output is correct
20 Correct 21 ms 2040 KB Output is correct