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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. typedef long long ll;
  5. typedef pair< int, int > pii;
  6. typedef pair< ll, ll > pll;
  7.  
  8. long d[100005];
  9.  
  10. int main(){
  11.  
  12.     int n;
  13.     char s[100005];
  14.     long pos= 0;
  15.     bool flag1= true;
  16.     bool infinite= false;
  17.     vector< long > position;
  18.  
  19.     scanf( "%d", &n );
  20.     scanf( "%s", &s );
  21.  
  22.     for( int i= 0; i< n; ++i )
  23.         scanf( "%ld", &d[i] );
  24.  
  25.     int i= 0;
  26.     position.push_back( pos );
  27.  
  28.     //cout << pos+1 << ' ';
  29.  
  30.     if( s[pos]== '<' ){
  31.         cout << "FINITE\n";
  32.         return 0;
  33.     }
  34.  
  35.     //cout << pos+1 << ' ';
  36.  
  37.     while( true ){
  38.  
  39.         if( s[pos]== '<' ){
  40.             pos-= d[pos];
  41.         }else{
  42.             pos+= d[pos];
  43.         }
  44.  
  45.         position.push_back( pos );
  46.          ++i;
  47.  
  48.         //cout << pos+1 << ' ';
  49.  
  50.         if( pos < 0 || pos >= n )
  51.             break;
  52.  
  53.         if( i >= 3 ){
  54.  
  55.             if( position[i]== position[i-2] && position[i-1]== position[i-3] ){
  56.                 infinite= true;
  57.                 break;
  58.             }
  59.         }
  60.  
  61.     }
  62.  
  63.     if( infinite ){
  64.         cout << "INFINITE\n";
  65.     }else {
  66.         cout << "FINITE\n";
  67.     }
  68.  
  69.  
  70. }
Runtime error #stdin #stdout #stderr 2s 529408KB
comments (?)
stdin 
7
>>><><<
1 1 2 2 2 2 1
stdout 
Standard output is empty
stderr 
terminate called after throwing an instance of 'std::bad_alloc'
  what():  std::bad_alloc
https://ideone.com/SNO6Ww
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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