oj.uz

Submission #671189

# Submission time Handle Problem Language Result Execution time Memory
671189 2022-12-12T10:26:31 Z Denkata Secret (JOI14_secret) C++14
0 / 100
 20000 ms 8276 KB 
#include<bits/stdc++.h>
#include "secret.h"
using namespace std;
int prefix[1006][1006];
int n;
void precompute(int l,int r,int A[])
{
    int mid = (l+r)/2;
    prefix[mid][mid]=A[mid];
    prefix[mid+1][mid+1]=A[mid+1];
    for(int i=mid+2;i<=r;i++)
        prefix[mid+1][i] = Secret(prefix[mid+1][i-1],A[i]);
    for(int i=mid-1;i>=l;i--)
        prefix[mid][i] = Secret(prefix[mid][i+1],A[i]);
    if(mid+1<r)
        precompute(mid+1,r,A);
   if(mid>l)
        precompute(l,mid,A);
}
void Init(int N, int A[])
{
    n=N;
    precompute(0,N-1,A);
}

int Query(int L, int R)
{
    int l = 0, r = n-1;
    while(l!=r)
    {
        int mid = (l+r)/2;
        if(L<=mid && mid+1<=R)
            return Secret(prefix[mid][L],prefix[mid+1][R]);///answers even if only on the left side there is query
        else if(mid==R)
            prefix[mid][L];
        else if(mid<L)
            l=mid+1;
        else r=mid;
    }
    return prefix[l][l];
}

Compilation message

secret.cpp: In function 'int Query(int, int)':
secret.cpp:35:26: warning: statement has no effect [-Wunused-value]
   35 |             prefix[mid][L];
      |             ~~~~~~~~~~~~~^

Subtask #1
0.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 117 ms 4444 KB Wrong Answer: Query(222, 254) - expected : 34031541, actual : 268854015.
2 Incorrect 114 ms 4400 KB Wrong Answer: Query(60, 375) - expected : 669221184, actual : 311474560.
3 Incorrect 113 ms 4428 KB Wrong Answer: Query(211, 401) - expected : 674373968, actual : 353554500.
4 Incorrect 423 ms 8276 KB Wrong Answer: Query(90, 497) - expected : 397934825, actual : 343081568.
5 Incorrect 420 ms 8268 KB Wrong Answer: Query(587, 915) - expected : 752404486, actual : 957013316.
6 Execution timed out 20013 ms 8248 KB Time limit exceeded
7 Incorrect 427 ms 8256 KB Wrong Answer: Query(84, 976) - expected : 742463504, actual : 675449873.
8 Incorrect 418 ms 8268 KB Wrong Answer: Query(58, 987) - expected : 20022464, actual : 273091792.
9 Incorrect 437 ms 8184 KB Wrong Answer: Query(33, 967) - expected : 676869696, actual : 827853577.
10 Incorrect 423 ms 8240 KB Wrong Answer: Query(116, 961) - expected : 68487362, actual : 337854787.