oj.uz

Submission #21126

# Submission time Handle Problem Language Result Execution time Memory
21126 2017-04-04T18:30:06 Z sbansalcs Secret (JOI14_secret) C++14
100 / 100
 633 ms 12956 KB 
#include "secret.h"
using namespace std;
int val[1002][1002], hav[1002][1002], X[1002];
void comp(int a, int b)  {
    if(a>=b)    return ;
    if(b-a==1)  hav[a][b]=1,val[a][b]=Secret(X[a],X[b]);
    else    {
        int f=(a+b)/2;
        int f2=f+1;
        for(int i=f-1;i>=a;i--)	{
        	hav[i][f]=1;
        	if(i==f-1)	val[i][f]=Secret(X[i],X[f]);
        	else	val[i][f]=Secret(X[i],val[i+1][f]);
        }
        f++;
        for(int i=f+1;i<=b;i++)	{
        	hav[f][i]=1;
        	if(i==f+1)	val[f][i]=Secret(X[f],X[i]);
        	else	val[f][i]=Secret(val[f][i-1],X[i]);
        }
        f--;
        if(hav[f][f2]==0)	hav[f][f2]=1,val[f][f2]=Secret(X[f],X[f2]);
        comp(a,f-1);
        comp(f2+1,b);
    }
}


void Init(int N, int A[]) {
	for(int i=1;i<=N;i++)	X[i]=A[i-1],hav[i][i]=1,val[i][i]=A[i-1];
	comp(1,N);
}

int Query(int L, int R) {
	L++,R++;
	if(hav[L][R])	return val[L][R];
	for(int i=L;i<=R-1;i++)	{
		if(hav[L][i] && hav[i+1][R])	return Secret(val[L][i],val[i+1][R]);
	}
  return -1;
}

Compilation message

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 166 ms 12956 KB Output is correct - number of calls to Secret by Init = 3339, maximum number of calls to Secret by Query = 1
2 Correct 176 ms 12956 KB Output is correct - number of calls to Secret by Init = 3347, maximum number of calls to Secret by Query = 1
3 Correct 169 ms 12956 KB Output is correct - number of calls to Secret by Init = 3355, maximum number of calls to Secret by Query = 1
4 Correct 609 ms 12956 KB Output is correct - number of calls to Secret by Init = 7476, maximum number of calls to Secret by Query = 1
5 Correct 583 ms 12956 KB Output is correct - number of calls to Secret by Init = 7485, maximum number of calls to Secret by Query = 1
6 Correct 593 ms 12956 KB Output is correct - number of calls to Secret by Init = 7485, maximum number of calls to Secret by Query = 1
7 Correct 633 ms 12956 KB Output is correct - number of calls to Secret by Init = 7485, maximum number of calls to Secret by Query = 1
8 Correct 609 ms 12956 KB Output is correct - number of calls to Secret by Init = 7485, maximum number of calls to Secret by Query = 1
9 Correct 629 ms 12956 KB Output is correct - number of calls to Secret by Init = 7485, maximum number of calls to Secret by Query = 1
10 Correct 619 ms 12956 KB Output is correct - number of calls to Secret by Init = 7485, maximum number of calls to Secret by Query = 1