Go: package main

import (
	"bufio"
	"os"
	"strings"
	"strconv"
	"reflect"
	"fmt"
)

var scanner = bufio.NewScanner(os.Stdin)

func scanBoard() [][]int {
	ret := make([][]int, 8)
	for k := range ret {
		ret[k] = make([]int, 8)
		for l := range ret[k] {
			ret[k][l] = 0
		}
	}
	for i := 0; i < 8; i++ {
		scanner.Scan()
		row := strings.Split(scanner.Text(), "")
		for j := 0; j < 8; j++ {
			ret[i][j], _ = strconv.Atoi(row[j])
		}
	}
	return ret
}

func main() {
	for {
		var board [][]int
		var ans string
		if board = scanBoard(); reflect.DeepEqual(board, [][]int{}) {
			break
		}
		fmt.Println(board)
		for i := 0; i < 7; i++ {
			for j := 0; j < 7; j++ {
				if board[i][j] == 1 && board[i+1][j] == 1 && board[i][j+1] == 1 && board[i+1][j+1] == 1 {
					ans = "A"
				}
			}
		}
		for i := 0; i < 5; i++ {
			for j := 0; j < 8; j++ {
				if board[i][j] == 1 && board[i+1][j] == 1 && board[i+2][j] == 1 && board[i+3][j] == 1 {
					ans = "B"
				}
			}
		}
		for i := 0; i < 8; i++ {
			for j := 0; j < 5; j++ {
				if board[i][j] == 1 && board[i][j+1] == 1 && board[i][j+2] == 1 && board[i][j+3] == 1 {
					ans = "C"
				}
			}
		}
		for i := 0; i < 6; i++ {
			for j := 0; j < 7; j++ {
				if board[i][j+1] == 1 && board[i+1][j] == 1 && board[i+1][j+1] == 1 && board[i+2][j] == 1 {
					ans = "D"
				}
			}
		}
		for i := 0; i < 7; i++ {
			for j := 0; j < 6; j++ {
				if board[i][j] == 1 && board[i][j+1] == 1 && board[i+1][j+1] == 1 && board[i+1][j+2] == 1 {
					ans = "E"
				}
			}
		}
		for i := 0; i < 7; i++ {
			for j := 0; j < 6; j++ {
				if board[i][j+1] == 1 && board[i][j+2] == 1 && board[i+1][j] == 1 && board[i+1][j+1] == 1 {
					ans = "G"
				}
			}
		}
		for i := 0; i < 6; i++ {
			for j := 0; j < 7; j++ {
				if board[i][j] == 1 && board[i+1][j] == 1 && board[i+1][j+1] == 1 && board[i+2][j+1] == 1 {
					ans = "F"
				}
			}
		}
		fmt.Println(ans)
	}
}

Python: while True:
    try:
        Map = []
        Base = []
        End = []
        for i in range(8):
            Map.append(list(map(str,input())))
        for i in range(8):
            if Base == []:
                
                for j in range(8):
                    if Map[i][j] == '1':
                        Base = [j,i]
                        break
            else:
                break
        for i in range(7,-1,-1):
            if End == []:
                for j in range(7,-1,-1):
                    if Map[i][j] == '1':
                        End = [j,i]
                        break
            else:
                break
        Yoko = End[0] - Base[0]
        Tate = End[1] - Base[1]
        if Tate == 1 and Yoko == 1:
            print("A")
        elif Yoko == 0 and Tate == 3:
            print("B")
        elif Tate == 0 and Yoko == 3:
            print("C")
        elif Yoko == -1 and Tate == 2:
            print("D")
        elif Yoko == 2 and Tate == 1:
            print("E")
        elif Yoko == 1 and Tate == 2:
            print("F")
        elif Tate == 1 and Yoko == 0:
            print("G")
        kara = input()
            
    except (EOFError,IndexError):
        print(Map)
        break

Python: import sys
line=[]
in_line=sys.stdin
for _in in in_line:line.append(_in)
#for i in range(26):line.append(input())
sets=(len(line)+1)//9
for i in range(sets):
    flag=0
    topindex=-1
    for j in range(i*9,i*9+8):
        a=line[j].count('1')
        if a!=0:t=line[j].index('1')
        else:t=-1
        if a==4:
            print('C')
            break
        elif flag==0 and a!=0:
            topindex=t
            if a==1:flag=1
            elif a==2:flag=2
        elif flag==1:
            if a==1:
                print('B')
                break
            elif a==2:
                if topindex==t:
                    print('F')
                    break
                else:
                    print('D')
                    break
        elif flag==2:
            if topindex==t:
                print('A')
                break
            elif topindex<t:
                print('E')
                break
            else:
                print('G')

Python: while 1:
 a=[list(map(int,input()))for _ in[0]*8]
 y=[sum(r)for r in a]
 x=[sum(c)for c in zip(*a)]
 print('B'if 4 in x else'C'if 4 in y else'DF'[a[y.index(1)][x.index(2)]]if 1 in y else'GE'[a[y.index(2)][x.index(1)]]if 1 in x else'A')
 try:input()
 except:break

Python: def judge(array):
    count = [[0 for i in range(8)] for i in range(8)]
    for i in range(8):
        x = 0
        for j in array[i]:
            if int(j) == 1:
                count[i][x] += 1
            x += 1

    a = 0
    p = []
    for i in range(8):
        for j in range(8):
            if count[i][j] != 0:
                p.append(a)
            a += 1

    if p[0]+1 != p[1]:
        if p[0] + 8*3 == p[3]:
            print('B')
        else:
            if p[0] + 8*2 + 1 == p[3]:
                print('F')
            else:
                print('D')
    else:
        if p[0]+1 == p[1] and p[1]+1 == p[2]:
            print('C')
        else:
            if p[0] + 8 == p[2] and p[1] + 8 == p[3]:
                print('A')
            else:
                if p[0]+8 == p[3]:
                    print('G')
                else:
                    print('E')
                    
while True:
    try:
        array = []
        for i in range(8):
            array.append(input())
        judge(array)
        input()
    except:
        break

Python: while True:
    squares = [list(input()) for _ in range(8)]
    for i in range(8)[::-1]:
        if not squares[i].count('1'):
            del squares[i]
    for i in range(8)[::-1]:
        if not [line[i] for line in squares].count('1'):
            for j in range(len(squares)):
                del squares[j][i]
    if len(squares) == len(squares[0]):
        print('A')
    elif len(squares) == 4:
        print('B')
    elif len(squares) == 1:
        print('C')
    elif squares[0] == ['0', '1']:
        print('D')
    elif squares[0] == ['1', '1', '0']:
        print('E')
    elif squares[0] == ['1', '0']:
        print('F')
    elif squares[0] == ['0', '1', '1']:
        print('G')
    try:
        input()
    except:
        break

Python: import sys
 
counter = 0
block = []
for line in sys.stdin:
  if line == "\n":
    counter = -1
    block = []
  else:
    counter += 1
    for i in line:
      if i == "1":
        block.append([counter,line.index(i)])
  if counter == 7:
    if block[0][0] == block[1][0]:
      if block[1][0] == block[2][0]:
        print("C")
      elif block[0][1] == block[2][1]:
        print("A")
      elif block[0][1] < block[2][1]:
        print("E")
      else:
        print("G")
    else:
      if block[0][1] == block[3][1]:
        print("B")
      elif block[0][1] < block[3][1]:
        print("F")
      else:
        print("D")