Submission #1203503

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Source Code Expand

#include <cstdio>
#include <cstring>
#include <cmath>
#include <algorithm>
#include <string>
#include <iostream>
#include <stdlib.h>
using namespace std;


int main()
{
  int n;  cin >> n;

  if(n==1){
    cout << 1 << endl;
    return 0;
  }

  long long int a[101] ={};
  int i;
  for(int i=0;i<n;i++)
    cin >> a[i];

  int ans;
  long long int res[240] = {};
  for(ans = n ; ans < 238 ; ans++){
    long long int used[240] = {};
    int used_n = 0;
    for(i= ans - n ; i < ans ; i++){
      res[i] = a[i - ans + n];
      used[used_n] = res[i];
      used_n++;
    }

    for(i=ans/2 - 1 ; i>=0 ; i--){
      if(i >= ans - n){
        if(i*2+2 < ans){

          if( res[i*2+1] <= res[i] || res[i*2+2] <= res[i]){
            break;
          }

        }else if(i*2+1 < ans){

          if( res[i*2+1] <= res[i] ){
            break;
          }

        }

      }else{

        if(i >= ans - n){
          if(i*2+2 < ans){
            if( res[i*2+1] == 0 || res[i*2+2] == 0)
              break;
          }else if(i*2+1 < ans){
            if( res[i*2+1] == 0 )
              break;
          }

        }



        else{
          if(i*2+2 < ans){
            res[i] = min(res[i*2+1],res[i*2+2]) - 1;

            while( res[i]>=0 ){
              bool ok = true;
              for(int k=0;k<used_n;k++){
                if(used[k] == res[i]){
                  ok = false;
                }
              }
              if(!ok)
                res[i]--;
              else
                break;
            }
            if(res[i] == -1)
              break;

            used[used_n] = res[i];
            used_n++;

          }
          else{
            res[i] = res[i*2+1] -1;

            while( res[i]>=0 ){
              bool ok = true;
              for(int k=0;k<used_n;k++){
                if(used[k] == res[i]){
                  ok = false;
                }
              }
              if(!ok)
                res[i]--;
              else
                break;
            }

            if(res[i] =< -1)
              break;

            used[used_n] = res[i];
            used_n++;

          }
        }
      }
      if(i == 0){
        cout << ans << endl;
        return 0;
      }
    }
  }

  cout << -1 << endl;

  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:106:24: error: expected primary-expression before ‘<’ token
             if(res[i] =< -1)
                        ^