oj.uz

Submission #703805

# Submission time Handle Problem Language Result Execution time Memory
703805 2023-02-28T12:20:13 Z TS_2392 Secret (JOI14_secret) C++14
100 / 100
 483 ms 8280 KB 
#include <bits/stdc++.h>
#include "secret.h"
using namespace std;
const int NN = 1002;
int n, a[NN], calc[NN][NN];
void dnc(int L, int R){
    if(L + 1 >= R) return;
    int mid = L + R >> 1;
    calc[mid][mid] = a[mid], calc[mid + 1][mid + 1] = a[mid + 1];
    for(int i = mid - 1; i >= L; --i) calc[i][mid] = Secret(a[i], calc[i + 1][mid]);
    for(int i = mid + 2; i <= R; ++i) calc[mid + 1][i] = Secret(calc[mid + 1][i - 1], a[i]);
    dnc(L, mid); dnc(mid + 1, R);
}
void Init(int N, int A[]){
    n = N;
    for(int i = 1; i <= n; ++i) a[i] = A[i - 1];
    memset(calc, 255, sizeof(calc)); dnc(1, n);
}
int Query(int L, int R){
    ++L; ++R;
    if(L == R) return a[L];
    if(L + 1 == R) return Secret(a[L], a[R]);
    int i;
    for(i = L; i < R; ++i) if(calc[L][i] != -1 && calc[i + 1][R] != -1) break;
    return Secret(calc[L][i], calc[i + 1][R]);
}

Compilation message

secret.cpp: In function 'void dnc(int, int)':
secret.cpp:8:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    8 |     int mid = L + R >> 1;
      |               ~~^~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 124 ms 6216 KB Output is correct - number of calls to Secret by Init = 3578, maximum number of calls to Secret by Query = 1
2 Correct 129 ms 6236 KB Output is correct - number of calls to Secret by Init = 3586, maximum number of calls to Secret by Query = 1
3 Correct 125 ms 6220 KB Output is correct - number of calls to Secret by Init = 3595, maximum number of calls to Secret by Query = 1
4 Correct 471 ms 8140 KB Output is correct - number of calls to Secret by Init = 7969, maximum number of calls to Secret by Query = 1
5 Correct 439 ms 8192 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
6 Correct 459 ms 8280 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
7 Correct 448 ms 8124 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
8 Correct 449 ms 8116 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
9 Correct 442 ms 8140 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
10 Correct 483 ms 8204 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1