Go: package main

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

func main() {
	io := NewIo()
	defer io.Flush()
	for {
		h := io.NextInt()
		if h == 0 {
			break
		}
		p := make([][]int, h)
		for i := 0; i < h; i++ {
			p[i] = make([]int, 5)
			for j := 0; j < 5; j++ {
				p[i][j] = io.NextInt()
			}
		}
		ans := 0
		for {
			sc := puyo(p, h)
			if sc == 0 {
				break
			}
			fall(p, h)
			ans += sc
		}
		io.Println(ans)
	}
}

func puyo(p [][]int, h int) int {
	sc := 0
	for i := 0; i < h; i++ {
		for j := 0; j < 3; j++ {
			var cnt int
			for cnt = 1; j+cnt < 5; cnt++ {
				if p[i][j] != p[i][j+cnt] {
					break
				}
			}
			if cnt > 2 {
				sc += p[i][j]*cnt
				for k := 0; k < cnt; k++ {
					p[i][j+k] = 0
				}
			}
		}
	}
	return sc
}

func fall(p [][]int, h int) {
	for j := 0; j < 5; j++ {
		for k := 1; k < h; k++ {
			for i := h - 1; i >= k; i-- {
				if p[i][j] == 0 {
					p[i][j] = p[i-1][j]
					p[i-1][j] = 0
				}
			}
		}
	}
}

// I/O template
type Io struct {
	reader    *bufio.Reader
	writer    *bufio.Writer
	tokens    []string
	nextToken int
}

func NewIo() *Io {
	return &Io{
		reader: bufio.NewReader(os.Stdin),
		writer: bufio.NewWriter(os.Stdout),
	}
}

func (io *Io) Flush() {
	err := io.writer.Flush()
	if err != nil {
		panic(err)
	}
}

func (io *Io) NextLine() string {
	var buff []byte
	for {
		line, isPrefix, err := io.reader.ReadLine()
		if err != nil {
			panic(err)
		}
		buff = append(buff, line...)
		if !isPrefix {
			break
		}
	}
	return string(buff)
}

func (io *Io) Next() string {
	for io.nextToken >= len(io.tokens) {
		line := io.NextLine()
		io.tokens = strings.Fields(line)
		io.nextToken = 0
	}
	s := io.tokens[io.nextToken]
	io.nextToken++
	return s
}

func (io *Io) NextInt() int {
	i, err := strconv.Atoi(io.Next())
	if err != nil {
		panic(err)
	}
	return i
}

func (io *Io) NextFloat() float64 {
	i, err := strconv.ParseFloat(io.Next(), 64)
	if err != nil {
		panic(err)
	}
	return i
}

func (io *Io) Println(a ...interface{}) {
	fmt.Fprintln(io.writer, a...)
}

func (io *Io) Printf(format string, a ...interface{}) {
	fmt.Fprintf(io.writer, format, a...)
}

func (io *Io) PrintIntSlice(a []int) {
	b := []interface{}{}
	for _, x := range a {
		b = append(b, x)
	}
	io.Println(b...)
}

func (io *Io) PrintStringSlice(a []string) {
	b := []interface{}{}
	for _, x := range a {
		b = append(b, x)
	}
	io.Println(b...)
}

func Log(name string, value interface{}) {
	fmt.Fprintf(os.Stderr, "%s=%+v\n", name, value)
}

func ExampleIo() {
	io := NewIo()
	defer io.Flush()
	a := make([]int, 0, 3)
	a[0], a[1], a[2] = io.NextInt(), io.NextInt(), io.NextInt()
	io.Println(a)
	io.PrintIntSlice(a)
	Log("io", a)
}

Python: while(1):
    h = int(input())
    if not h:
        break
    a = [[] for j in range(h)]
    for i in range(h):
        a[i] = [int(i) for i in input().split()]
    ans = 0
    disap = True
    fall = True
    while(disap):
        while(disap):
            disap = False
            for i in range(h):
                if a[i][0] and all([a[i][k] == a[i][k+1] for k in range(4)]):
                    ans += a[i][0]*5
                    for k in range(5):
                        a[i][k] = 0
                    disap = True
                    fall = True
                elif a[i][0] and all([a[i][k] == a[i][k+1] for k in range(3)]):
                    ans += a[i][0]*4
                    for k in range(4):
                        a[i][k] = 0
                    disap = True
                    fall = True
                elif a[i][1] and all([a[i][k+1] == a[i][k+2] for k in range(3)]):
                    ans += a[i][1]*4
                    for k in range(4):
                        a[i][k+1] = 0
                    disap = True
                    fall = True
                elif a[i][0] and all([a[i][k] == a[i][k+1] for k in range(2)]):
                    ans += a[i][0]*3
                    for k in range(3):
                        a[i][k] = 0
                    disap = True
                    fall = True
                elif a[i][1] and all([a[i][k+1] == a[i][k+2] for k in range(2)]):
                    ans += a[i][1]*3
                    for k in range(3):
                        a[i][k+1] = 0
                    disap = True
                    fall = True
                elif a[i][2] and all([a[i][k+2] == a[i][k+3] for k in range(2)]):
                    ans += a[i][2]*3
                    for k in range(3):
                        a[i][k+2] = 0
                    disap = True
                    fall = True
        while(fall):
            fall = False
            for i in range(1, h):
                for j in range(5):
                    if a[i][j] == 0 and a[i-1][j]:
                        a[i][j], a[i-1][j] = a[i-1][j], a[i][j]
                        fall = True
                        disap = True
    print(ans)

Python: import sys
input = sys.stdin.readline


def cal(board):
    H = len(board)
    gain = 0
    tmp = [1]*5
    for row in board:
        for i in range(1, 5):
            tmp[i] = tmp[i-1] * (row[i-1] == row[i]) + 1
        for i in range(4, -1, -1):
            if tmp[i] >= 3:
                gain += row[i] * tmp[i]
                for j in range(i, i-tmp[i], -1):
                    row[j] = 0
                break

    for col in range(5):
        i = H-1
        for row in board[::-1]:
            if row[col]:
                board[i][col] = row[col]
                i -= 1
        for i in range(i, -1, -1):
            board[i][col] = 0

    return gain


while True:
    H = int(input())
    if H == 0:
        break

    board = []
    for _ in [0]*H:
        *line, = map(int, input().split())
        board.append(line)

    score = 0
    while True:
        gain = cal(board)
        if gain == 0:
            break
        score += gain
    print(score)

Python: bi = 10

while True:

    H = int(input())
    if H == 0:
        break

    a = []

    for i in range(H):

        A = list(input().split())
        a.append(A)

    ans = 0
    rep = True
    while rep:

        b = [[False] * 5 for i in range(H)]
        
        rep = False

        for i in range(H):
            for j in range(5):

       

                if j - 2 >= 0 and a[i][j-2] == a[i][j-1] and a[i][j-1] == a[i][j]:
                    b[i][j] = True
                if j - 1 >= 0 and j + 1 < 5 and a[i][j-1] == a[i][j] and a[i][j+1] == a[i][j]:
                    b[i][j] = True
                if j + 2 < 5  and a[i][j+2] == a[i][j+1] and a[i][j+1] == a[i][j]:
                    b[i][j] = True

        for i in range(H):
            for j in range(5):
                if b[i][j]:
                    rep = True
                    #print (a[i][j])
                    ans += int(a[i][j])
                    a[i][j] = bi
                    bi += 0.1
        rep2 = True
        while rep2:
            rep2 = False
            
            for i in range(H-1):
                i = H-2-i
                for j in range(5):

                    if int(a[i][j]) <= 9 and int(a[i+1][j]) > 9:
                        a[i+1][j] = a[i][j]
                        a[i][j] = bi
                        bi += 0.1
                        rep2 = True
    #print (a)
    print (ans)