Submission #342212

#	Time	Username	Problem	Language	Result	Execution time	Memory
342212		blue	Secret (JOI14_secret)	C++11	30 / 100	588 ms	4600 KiB

secret

#include "secret.h"
using namespace std;

int res[1000][11];

void Init(int N, int A[])
{
    for(int i = 0; i < N; i++) res[i][0] = A[i];

    for(int exp = 1; (1 << exp) <= N; exp++)
    {
        for(int i = 0; i + (1 << exp) - 1 < N; i++)
        {
            res[i][exp] = Secret(res[i][exp - 1], res[i + (1 << (exp-1))][exp - 1]);
        }
    }
}

int Query(int L, int R)
{
    int query_res = -1;
    int s = (R - L + 1);

    for(int exp = 10; exp >= 0; exp--)
    {
        if((R-L+1) & (1 << exp))
        {
            if(query_res == -1) query_res = res[L][exp];
            else query_res = Secret(query_res, res[L][exp]);

            L = L + (1 << exp);
        }
    }
    return query_res;
}

Compilation message (stderr)

secret.cpp: In function 'int Query(int, int)':
secret.cpp:22:9: warning: unused variable 's' [-Wunused-variable]
   22 |     int s = (R - L + 1);
      |         ^

• Subtask 1: 30 / 100