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Submission #7514

# Submission time Handle Problem Language Result Execution time Memory
7514 2014-08-10T07:42:37 Z Namnamseo Rice Hub (IOI11_ricehub) C++
100 / 100
 20 ms 5776 KB 
#include "ricehub.h"

long long prefix[100010];

long long sum(int a,int b){
    if(a==0) return prefix[b];
    return prefix[b]-prefix[a-1];
}

bool canUse(int from,int to,long long B){
    int middle = (to+from)/2;
    if((to-from)%2){
        return sum(middle+1,to) - sum(from,middle) <= B;
    } else {
        return sum(middle+1,to) - sum(from, middle-1) <= B;
    }
}

bool checkWidth(int r,long long Batt,int w){
    int i;
    if(w<=1) return true;
    for(i=0;i+w-1<r;i++) {
        if(canUse(i,i+w-1,Batt)) return true;
    }
    return false;
}


int besthub(int R, int L, int X[], long long B)
{
    int i;
    prefix[0]=X[0];
    
    for(i=1;i<R;i++){
        prefix[i]=prefix[i-1]+  X   [i];
    }
    int left = 1, right = R+1;
    int mid;
    while(left+1 != right){
        mid = (left+right)>>1;
        if(checkWidth(R,B,mid)){
            left=mid;
        } else {
            right=mid;
        }
    }
    return left;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 5776 KB Output is correct
2 Correct 0 ms 5776 KB Output is correct
3 Correct 0 ms 5776 KB Output is correct
4 Correct 0 ms 5776 KB Output is correct
5 Correct 0 ms 5776 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 5776 KB Output is correct
2 Correct 0 ms 5776 KB Output is correct
3 Correct 0 ms 5776 KB Output is correct
4 Correct 0 ms 5776 KB Output is correct
5 Correct 0 ms 5776 KB Output is correct
6 Correct 0 ms 5776 KB Output is correct
7 Correct 0 ms 5776 KB Output is correct
8 Correct 0 ms 5776 KB Output is correct
9 Correct 0 ms 5776 KB Output is correct
10 Correct 0 ms 5776 KB Output is correct
11 Correct 0 ms 5776 KB Output is correct
12 Correct 0 ms 5776 KB Output is correct
13 Correct 0 ms 5776 KB Output is correct
14 Correct 0 ms 5776 KB Output is correct
15 Correct 0 ms 5776 KB Output is correct
16 Correct 0 ms 5776 KB Output is correct
17 Correct 0 ms 5776 KB Output is correct
18 Correct 0 ms 5776 KB Output is correct
19 Correct 0 ms 5776 KB Output is correct
20 Correct 0 ms 5776 KB Output is correct
21 Correct 0 ms 5776 KB Output is correct
22 Correct 0 ms 5776 KB Output is correct
23 Correct 0 ms 5776 KB Output is correct
24 Correct 0 ms 5776 KB Output is correct
25 Correct 0 ms 5776 KB Output is correct
26 Correct 0 ms 5776 KB Output is correct
27 Correct 0 ms 5776 KB Output is correct
28 Correct 0 ms 5776 KB Output is correct

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 5776 KB Output is correct
2 Correct 0 ms 5776 KB Output is correct
3 Correct 0 ms 5776 KB Output is correct
4 Correct 0 ms 5776 KB Output is correct
5 Correct 0 ms 5776 KB Output is correct
6 Correct 0 ms 5776 KB Output is correct
7 Correct 0 ms 5776 KB Output is correct
8 Correct 0 ms 5776 KB Output is correct
9 Correct 0 ms 5776 KB Output is correct
10 Correct 0 ms 5776 KB Output is correct
11 Correct 0 ms 5776 KB Output is correct
12 Correct 0 ms 5776 KB Output is correct
13 Correct 0 ms 5776 KB Output is correct
14 Correct 0 ms 5776 KB Output is correct
15 Correct 0 ms 5776 KB Output is correct
16 Correct 0 ms 5776 KB Output is correct
17 Correct 0 ms 5776 KB Output is correct
18 Correct 0 ms 5776 KB Output is correct
19 Correct 0 ms 5776 KB Output is correct
20 Correct 0 ms 5776 KB Output is correct
21 Correct 0 ms 5776 KB Output is correct
22 Correct 0 ms 5776 KB Output is correct
23 Correct 0 ms 5776 KB Output is correct
24 Correct 0 ms 5776 KB Output is correct
25 Correct 0 ms 5776 KB Output is correct
26 Correct 0 ms 5776 KB Output is correct
27 Correct 0 ms 5776 KB Output is correct
28 Correct 0 ms 5776 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 5776 KB Output is correct
2 Correct 4 ms 5776 KB Output is correct
3 Correct 16 ms 5776 KB Output is correct
4 Correct 16 ms 5776 KB Output is correct
5 Correct 12 ms 5776 KB Output is correct
6 Correct 8 ms 5776 KB Output is correct
7 Correct 8 ms 5776 KB Output is correct
8 Correct 8 ms 5776 KB Output is correct
9 Correct 16 ms 5776 KB Output is correct
10 Correct 0 ms 5776 KB Output is correct
11 Correct 8 ms 5776 KB Output is correct
12 Correct 12 ms 5776 KB Output is correct
13 Correct 12 ms 5776 KB Output is correct
14 Correct 12 ms 5776 KB Output is correct
15 Correct 8 ms 5776 KB Output is correct
16 Correct 16 ms 5776 KB Output is correct
17 Correct 16 ms 5776 KB Output is correct
18 Correct 16 ms 5776 KB Output is correct
19 Correct 20 ms 5776 KB Output is correct
20 Correct 16 ms 5776 KB Output is correct