HDU 2042 不容易系列之二

 

#include <stdio.h>
#include <stdlib.h>
void chart ( int ch[] )
{
     ch[ 0 ] = 3;
     for ( int i = 1 ; i < 35 ; ++i )
         ch[ i ] = ( ch[ i - 1 ] - 1 ) * 2;
 }
int main ( )
{
    int ch[35] = {0},n,N;
    chart ( ch );
    while ( scanf ( "%d",&N ) == 1 )
          while ( N-- )
          {
                scanf ( "%d" , &n );
                printf ( "%d\n" , ch[n] );
                }
    return 0;
}

 

 

果断打表