Submission #923336

#	Time	Username	Problem	Language	Result	Execution time	Memory
923336		vjudge1	Hidden Sequence (info1cup18_hidden)	C++17	0 / 100	2 ms	704 KiB

hidden

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

#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

using namespace std;

#define ll long long
#define ld long double
#define pb push_back
#define pf push_front
#define pii pair<int,int>
#define all(v) v.begin(),v.end()
#define F first
#define S second
#define mem(a,i) memset(a,i,sizeof(a))
#define sz(s) (int)s.size()
// #define int ll
#define y1 yy
#define maksim gay
#define ppb pop_back
#define gcd(a,b) __gcd(a,b)
#define in insert

const int dx[4]={-1,0,1,0};
const int dy[4]={0,-1,0,1};

const int inf=1e16;
const int N=5e4+100;
const int MAX=1e5+10;
const int mod=1e9+7;

vector<int> findSequence(int n){
  int L=(n/2)+1;
  int c1=-1,c0=-1;
  for(int i=1;i<=L;i++){
    vector<int> v;
    for(int j=1;j<=i;j++)v.pb(1);
    if(!isSubsequence(v)){
      c1=i-1;
      c0=n-c1;
      break;
    }
  }
  if(c1==-1){
    for(int i=1;i<=L;i++){
      vector<int> v;
      for(int j=1;j<=i;j++)v.pb(0);
      if(!isSubsequence(v)){
        c0=i-1;
        c1=n-c1;
        break;
      }
    }    
  }
  vector<int> ans;
  int cnt0=0,cnt1=0;
  bool ok=0;
  if(c0<L){
    ok=0;
  }
  else ok=1;
  if(!ok){
    vector<int> v;
    v.pb(1);
    for(int i=1;i<=c0;i++)v.pb(0);
    if(!isSubsequence(v)){
      ans.pb(0);
      c0--;
      cnt0++;
    }
    else{
      ans.pb(1);
      c1--;
      cnt1++;
    }
  }
  else{
    vector<int> v;
    v.pb(0);
    for(int i=1;i<=c0;i++)v.pb(1);
    if(!isSubsequence(v)){
      ans.pb(1);
      c1--;
      cnt1++;
    }
    else{
      ans.pb(0);
      c0--;
      cnt0++;
    }
  }
  for(int i=2;i<=n;i++){
    vector<int> v=ans;
    v.pb(1);
    for(int j=1;j<=c0;j++)v.pb(0);
    if(isSubsequence(v))ans.pb(1);
    else ans.pb(0);
  }
  return ans;
}


// main(){
//   // freopen("prizes.in", "r", stdin);
//   // freopen("prizes.out", "w", stdout);
//   ios_base::sync_with_stdio(0);
//   cin.tie(0);
//   cout.tie(0);
//   int t=1;
//   // cin>>t;
//   while(t--){
//     solve();
//   }
// }

Compilation message (stderr)

hidden.cpp:29:15: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+16' to '2147483647' [-Woverflow]
   29 | const int inf=1e16;
      |               ^~~~
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
grader.cpp:29:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for (int i=0; i<ans.size () && i < N; i++)
      |                   ~^~~~~~~~~~~~

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