Submission #392410

#	Time	Username	Problem	Language	Result	Execution time	Memory
392410		Hazem	Rice Hub (IOI11_ricehub)	C++14	100 / 100	17 ms	3292 KiB

ricehub

#include <bits/stdc++.h>

using namespace std;
 
#define S second
#define F first
#define LL long long 
 
const int N = 2e5+10;
const LL MOD = 1e9+7;
const LL LINF = 1e18;
const LL INF = 1e9;

LL a[N],pr[N];

int besthub(int R, int L, int X[], long long B)
{
    int n = R;
    
    for(int i=1;i<=n;i++)
        a[i] = X[i-1],pr[i] = pr[i-1]+a[i];

    int l = 1,r = 1,ans = 0;
    while(r<=n){
        int mid = (l+r)/2;
        LL cost = pr[r]-pr[mid-1]-(r-mid+1)*a[mid]+a[mid]*(mid-l+1)-pr[mid]+pr[l-1];
        if(cost<=B)
            ans = max(ans,r-l+1),r++;
        else 
            l++;
    }
    return ans;
}


/*
#define MAX_R  1000000

static int R, L;
static long long B;
static int X[MAX_R];
static int solution;

inline 
void my_assert(int e) {if (!e) abort();}

static void read_input()
{
  int i;
  my_assert(3==scanf("%d %d %lld",&R,&L,&B));
  for(i=0; i<R; i++)
    my_assert(1==scanf("%d",&X[i]));
  my_assert(1==scanf("%d",&solution));
}

int main()
{
  int ans;
  read_input();
  ans = besthub(R,L,X,B);
  if(ans==solution)
    printf("Correct.\n");
  else
    printf("Incorrect.  Returned %d instead of %d.\n",ans,solution);

  return 0;
}
*/

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