百练2811:熄灯问题

题目链接：http://bailian.openjudge.cn/practice/2811/

#include <cstdio>
int press[6][7];
int puzzle[6][7];
bool guess(){
    for(int i = 1;i < 5;i++)
        for(int j = 1;j < 7;j++)
        press[i+1][j] =
        (puzzle[i][j] + press[i][j] + press[i-1][j] + press[i][j-1] + press[i][j+1])%2;
    for(int j = 1;j < 7;j++)
        if((press[5][j] + press[5][j-1] + press[4][j] + press[5][j+1])%2 != puzzle[5][j])
           return false;
    return true;
}
void enumerate(){
    //00000 100000 01000 11000 001000 101000
    int c;
    for(c = 1;c < 7;c++)
        press[1][c] = 0;
    while(guess()==false){
        press[1][1] ++;
        c = 1;
        while(press[1][c] > 1){
            press[1][c] = 0;
            c++;
            press[1][c]++;
        }
    }
    return;
}
int main(){
    //int t;
    //scanf("%d",&t);
    //for(int p = 1;p <= t;p++){
        for(int i = 1;i < 7;i++)
            press[0][i] = 0;
        for(int i = 1;i < 6;i++){
            press[i][0] = 0;
            press[i][7] = 0;
        }
        for(int i = 1;i < 6;i++)
            for(int j = 1;j < 7;j++)
                scanf("%d",&puzzle[i][j]);
        enumerate();
        //printf("PUZZLE #%d
",p);
        for(int r = 1; r < 6; r++ )
        {
            for (int c = 1; c < 7; c++ )
                printf("%d ",press[r][c]);
            printf("
");
        }
    //}
    return 0;
}