Submission #301342

#	Time	Username	Problem	Language	Result	Execution time	Memory
301342		infinite_iq	Coins (IOI17_coins)	C++14	0 / 100	3 ms	1280 KiB

coins

#include <bits/stdc++.h>
using namespace std ;
#define pb push_back 
typedef vector < int > vi ;
#include "coins.h"

vi coin_flips ( vi b , int c ) {
        int row = -1 , column = -1 ;
        for ( int i = 0 ; i < 8 ; i ++ ) {
                for ( int j = 0 ; j < 8 ; j ++ ) {
                        if ( i * 8 + j == c ) {
                                row = i ;
                                column = j ;
                                break ;
                        }
                }
        }
        vi flips ;
        for ( int i = 0 ; i < 3 ; i ++ ) {
                int on = ( ( row & ( 1 << i ) ) > 0 ) ;
                if ( b [i] != on ) {
                        flips .pb ( i ) ;
                }
        }
        for ( int i = 3 ; i < 6 ; i ++ ) {
                int on = ( ( column & ( 1 << ( i - 3 ) ) ) > 0 ) ;
                if ( b [i] != on ) {
                        flips .pb ( i ) ;
                }
        }
        return flips ;
}
int find_coin ( vi b ) {
        int row = 0 , column = 0 ; 
        for ( int i = 0 ; i < 3 ; i ++ ) {
                if ( b [i] == 1 ) {
                        row |= ( 1 << i ) ;
                }
        }
        for ( int i = 3 ; i < 6 ; i ++ ) {
                if ( b [i] == 1 ) {
                        column |= ( 1 << ( i - 3 ) ) ;
                }
        }
        return row * 8 + column ;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 15
• Subtask 5: 0 / 50