oj.uz

Submission #380502

# Submission time Handle Problem Language Result Execution time Memory
380502 2021-03-22T05:30:13 Z pure_mem Secret (JOI14_secret) C++14
100 / 100
 536 ms 9492 KB 
#include "secret.h"
#include <bits/stdc++.h>

#define X first
#define Y second
#define MP make_pair
#define ll long long

using namespace std;

int q[1001][1001];
bool was[1001][1001];
void Init(int N, int A[]) {
  	stack< pair<int, int> > st;
  	st.push(MP(1, N));
  	while(!st.empty()){
  		int l = st.top().X, r = st.top().Y; st.pop();
  		int m = (l + r) / 2;
  		was[m][m] = 1, q[m][m] = A[m - 1];
  		for(int i = m - 1, j = A[m - 1];i >= l;i--){
  			j = Secret(A[i - 1], j), q[i][m] = j, was[i][m] = 1;	
  		}
  		if(l == r)
  			continue;
  		was[m + 1][m + 1] = 1, q[m + 1][m + 1] = A[m];
  		for(int i = m + 2, j = A[m];i <= r;i++){
  			j = Secret(j, A[i - 1]), q[m + 1][i] = j, was[m + 1][i] = 1;
  		}
  		if(l != r)
  			st.push(MP(l, m)), st.push(MP(m + 1, r));
  	}
  // Secret(0, 1000000000);
}

int Query(int L, int R) {
	L += 1, R += 1;
	if(was[L][R])
		return q[L][R];
	for(int i = L;i < R;i++){
		if(was[L][i] && was[i + 1][R])
			return Secret(q[L][i], q[i + 1][R]);
	}
	return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 143 ms 4972 KB Output is correct - number of calls to Secret by Init = 3578, maximum number of calls to Secret by Query = 1
2 Correct 143 ms 4972 KB Output is correct - number of calls to Secret by Init = 3586, maximum number of calls to Secret by Query = 1
3 Correct 163 ms 4972 KB Output is correct - number of calls to Secret by Init = 3595, maximum number of calls to Secret by Query = 1
4 Correct 504 ms 9324 KB Output is correct - number of calls to Secret by Init = 7969, maximum number of calls to Secret by Query = 1
5 Correct 530 ms 9324 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
6 Correct 520 ms 9436 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
7 Correct 526 ms 9452 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
8 Correct 525 ms 9324 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
9 Correct 515 ms 9492 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
10 Correct 536 ms 9364 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1