oj.uz

Submission #62649

# Submission time Handle Problem Language Result Execution time Memory
62649 2018-07-29T15:49:01 Z Diuven Secret (JOI14_secret) C++11
100 / 100
 715 ms 9172 KB 
#include "secret.h"
#include <assert.h>

static int A[1010];
static int B[1010][1010];

static int n;

void init(int s, int e){
	if(e<=s) return;
	int m=(s+e)/2;
	init(s,m-1); init(m+1,e);
	for(int i=m-1; i>=s; i--) B[i][m]=Secret(A[i], B[i+1][m]);
	for(int i=m+2; i<=e; i++) B[m+1][i]=Secret(B[m+1][i-1], A[i]);
}

int get(int s, int e, int l, int r){
	int m=(s+e)/2;
	if(l<=m && m<=r) return m;
	if(r<m) return get(s,m-1,l,r);
	if(m<l) return get(m+1,e,l,r);
	assert(true);
}

void Init(int N, int _A[]){
	n=N;
	for(int i=0; i<n; i++) A[i]=_A[i];
	for(int i=0; i<n; i++) B[i][i]=A[i];
	init(0,n-1);
}

int Query(int l, int r){
	if(l==r) return A[l];
	int m=get(0,n-1,l,r);
	if(m==r) return B[l][m];
	else return Secret(B[l][m], B[m+1][r]);
}

Compilation message

secret.cpp: In function 'int get(int, int, int, int)':
secret.cpp:23:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 180 ms 4600 KB Output is correct - number of calls to Secret by Init = 3331, maximum number of calls to Secret by Query = 1
2 Correct 197 ms 4676 KB Output is correct - number of calls to Secret by Init = 3339, maximum number of calls to Secret by Query = 1
3 Correct 178 ms 4728 KB Output is correct - number of calls to Secret by Init = 3347, maximum number of calls to Secret by Query = 1
4 Correct 646 ms 8696 KB Output is correct - number of calls to Secret by Init = 7467, maximum number of calls to Secret by Query = 1
5 Correct 684 ms 8696 KB Output is correct - number of calls to Secret by Init = 7476, maximum number of calls to Secret by Query = 1
6 Correct 707 ms 8820 KB Output is correct - number of calls to Secret by Init = 7476, maximum number of calls to Secret by Query = 1
7 Correct 710 ms 8936 KB Output is correct - number of calls to Secret by Init = 7476, maximum number of calls to Secret by Query = 1
8 Correct 707 ms 9060 KB Output is correct - number of calls to Secret by Init = 7476, maximum number of calls to Secret by Query = 1
9 Correct 715 ms 9172 KB Output is correct - number of calls to Secret by Init = 7476, maximum number of calls to Secret by Query = 1
10 Correct 706 ms 9172 KB Output is correct - number of calls to Secret by Init = 7476, maximum number of calls to Secret by Query = 1