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Submission #977582

# Submission time Handle Problem Language Result Execution time Memory
977582 2024-05-08T07:21:16 Z Amaarsaa Rice Hub (IOI11_ricehub) C++14
68 / 100
 12 ms 2676 KB 
#include<bits/stdc++.h>
#include "ricehub.h"
using namespace std;
using ll = long long;
ll Pre[100005];
ll Sum(ll l, ll r) {
	if ( l == 0) return Pre[r];
	return Pre[r] - Pre[l - 1];
}
int besthub(int R, int L, int X[], long long B)	{
	ll s;
	int i, ans = 1, mn, l, r,lo, hi, mid;
	for (i = 0; i < R; i ++) {
		if ( i == 0) Pre[i] = X[i];
		else Pre[i] = Pre[i - 1] + X[i];
	}
	for (int i = 0; i + 1 < R; i ++) {
		if ( X[i + 1] - X[i] > B) continue;
		lo = 1;
		hi = min(i + 1, R - (i + 1)) ;
		while ( lo  < hi ) {
			mid = (lo +hi)/2;
			l = i - mid;
			r = i + mid + 1;
		//	cout << mid << " " <<l << " " << i << " " << i  + 1 << " " << r<<" " <<Sum(i + 1, r)  << " " << Sum(l, i) << endl;
			if ( Sum(i + 1, r) - Sum (l, i) <= B) lo = mid + 1;
			else hi = mid;
		}
		mid = lo  ;
	//	cout << mid << endl;
		
		l = i - mid ;
		r = i + mid + 1;
		s =  Sum(i + 1, r - 1) - Sum(l + 1, i) ;
	//	cout << l << " " << r <<" " << s << endl;
		mn = INT_MAX;
		if ( l >= 0) {
			mn = min(mn, X[i] - X[l]);
		}
		if ( r < R) {
			mn = min(mn, X[r] - X[i + 1]);
		}
		if (mn + s <= B) {
			ans = max(ans, r - l);
		}
		else ans = max(ans, r - l - 1);
	}
	return ans;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 0 ms 2392 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2392 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2648 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2392 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2396 KB Output is correct
2 Correct 2 ms 2648 KB Output is correct
3 Incorrect 12 ms 2676 KB Output isn't correct
4 Halted 0 ms 0 KB -