Submission #503986

#TimeUsernameProblemLanguageResultExecution timeMemory
503986Abrar_Al_SamitSecret (JOI14_secret)C++17
0 / 100
462 ms4424 KiB
#include "secret.h"
#include <vector>
using namespace std;

vector<vector<int>>sp(1001, vector<int>(11));
void Init(int N, int A[]) {
  for(int i=0; i<N; ++i) {
    sp[i][0] = A[i];
  }
  for(int j=1; j<11; ++j) {
    for(int i=0; i+(1<<j)-1<N; ++i) {
      sp[i][j] = Secret(sp[i][j-1], sp[i+(1<<j)][j-1]);
    }
  }
}

int Query(int L, int R) {
  int len = R-L+1;
  int id = L;
  int ret = 0;
  for(int j=0; j<11; ++j) if(len>>j&1) {
    ret = Secret(ret, sp[id][j]);
    id += 1<<j;
  }
  return ret;
}
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