Submission #1208038

#	Time	Username	Problem	Language	Result	Execution time	Memory
1208038		lopkus	Hidden Sequence (info1cup18_hidden)	C++20	15 / 100	3 ms	424 KiB

hidden

#include<bits/stdc++.h>
#include "grader.h"

using namespace std;

int ask(std::vector<int> r) {
  return isSubsequence(r);
}

vector < int > findSequence (int n) {
  std::vector<int> t;
  for(int i = 1; i <= n / 2 + 1; i++) {
    t.push_back(1);
  }
  if(ask(t)) {
    // 0 is smaller
    int block = - 1;
    std::vector<int> E;
    while(ask(E)) {
      E.push_back(0);
    }
    E.pop_back();
    std::vector<int> to(n + 1);
    for(int i = 0; i <= E.size(); i++) {
      std::vector<int> b = E;
      while(b.size() < n / 2 + 3) {
        b.insert(b.begin() + i, 1);
      }
      if(ask(b)) {
        to[i] = - 69;
        continue;
      }
      b = E;
      to[i] = - 1;
      while(b.size() < n / 2 + 3 && ask(b)) {
        b.insert(b.begin() + i, 1);

        to[i] += 1;
      }
    }
    std::vector<int> ans;
    int sum = n - E.size();
    for(int i = 0; i <= E.size(); i++) {
      if(to[i] >= 0) {
        sum -= to[i];
      }
    }
    int cnt = 0;
    for(int i = 0; i <= E.size(); i++) {
      if(to[i] == - 69) {
        cnt += 1;
      }
    }
    //assert(sum % cnt == 0);
    if(cnt > 0) {
      //assert(sum % cnt == 0);
      sum /= cnt;
    }
    for(int i = 0; i <= E.size(); i++) {
      if(to[i] == - 69) {
        to[i] = sum;
      }
    }
    for(int i = 0; i < to[0]; i++) {
      ans.push_back(1);
    }
    for(int i = 1; i <= E.size(); i++) {
      ans.push_back(0);
      for(int j = 1; j <= to[i]; j++) {
        ans.push_back(1);
      }
    }
    return ans;
  }
  else {
    // 0 is smaller
    int block = - 1;
    std::vector<int> E;
    while(ask(E)) {
      E.push_back(1);
    }
    E.pop_back();
    std::vector<int> to(n + 1);
    for(int i = 0; i <= E.size(); i++) {
      std::vector<int> b = E;
      while(b.size() < n / 2 + 3) {
        b.insert(b.begin() + i, 0);
      }
      if(ask(b)) {
        to[i] = - 69;
        continue;
      }
      b = E;
      to[i] = - 1;
      while(b.size() < n / 2 + 3 && ask(b)) {
        b.insert(b.begin() + i, 0);

        to[i] += 1;
      }
    }
    std::vector<int> ans;
    int sum = n - E.size();
    for(int i = 0; i <= E.size(); i++) {
      if(to[i] >= 0) {
        sum -= to[i];
      }
    }
    int cnt = 0;
    for(int i = 0; i <= E.size(); i++) {
      if(to[i] == - 69) {
        cnt += 1;
      }
    }
    //assert(sum % cnt == 0);
    if(cnt > 0) {
      //assert(sum % cnt == 0);
      sum /= cnt;
    }
    for(int i = 0; i <= E.size(); i++) {
      if(to[i] == - 69) {
        to[i] = sum;
      }
    }
    for(int i = 0; i < to[0]; i++) {
      ans.push_back(0);
    }
    for(int i = 1; i <= E.size(); i++) {
      ans.push_back(1);
      for(int j = 1; j <= to[i]; j++) {
        ans.push_back(0);
      }
    }
    return ans;
  }
}
/**
10
0 1 1 0 0 0 1 1 1 1
**/

Compilation message (stderr)

grader.cpp: In function 'int main()':
grader.cpp:28:26: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wformat=]
   28 |     fprintf (fifo_out, "%d\n", ans.size ());
      |                         ~^     ~~~~~~~~~~~
      |                          |              |
      |                          int            std::vector<int>::size_type {aka long unsigned int}
      |                         %ld

• Subtask 1: 15 / 20
• Subtask 2: 0 / 80