Submission #977563

#	Time	Username	Problem	Language	Result	Execution time	Memory
977563		Amaarsaa	Rice Hub (IOI11_ricehub)	C++14	0 / 100	4 ms	2396 KiB

ricehub

#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 = 0, 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 = 0;
		hi = min(i + 1, R - (i + 1)) - 1;
		while ( lo  < hi ) {
			mid = (lo +hi)/2;
			l = i - mid;
			r = i + mid + 1;
			if ( Sum(i + 1, r) - Sum(l, i) <= B) lo = mid + 1;
			else hi = mid;
		}
		mid = lo + 1 ;
		l = i - mid + 1;
		r = i + mid;
		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;
}

Compilation message (stderr)

ricehub.cpp: In function 'int besthub(int, int, int*, long long int)':
ricehub.cpp:38:10: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
   38 |   if (mn + s <= B) {
      |       ~~~^~~

• Subtask 1: 0 / 17
• Subtask 2: 0 / 25
• Subtask 3: 0 / 26
• Subtask 4: 0 / 32