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: from collections import defaultdict,deque
import sys,heapq,bisect,math,itertools,string,queue,datetime
sys.setrecursionlimit(10**8)
INF = float('inf')
mod = 10**9+7
eps = 10**-7
def inpl(): return list(map(int, input().split()))
def inpl_str(): return list(input().split())

def calc(p,x):
    return p*(100+x)//100


while True:
    H = int(input())
    if H == 0:
        break
    else:
        W = 5
        ban = [inpl() for i in range(H)]
        ans = 0
        while True:
            flag = False
            for y,[a1,a2,a3,a4,a5] in enumerate(ban):
                if a1 == a2 and a2 == a3 and a1 != -1:
                    flag = True
                    ban[y][0] = -1
                    ban[y][1] = -1
                    ban[y][2] = -1
                    ans += a1*3
                    if a3 == a4:
                        ban[y][3] = -1
                        ans += a4
                        if a4 == a5:
                            ban[y][4] = -1
                            ans += a5
                elif a2 == a3 and a3 == a4 and a2 != -1:
                    flag = True
                    ban[y][1] = -1
                    ban[y][2] = -1
                    ban[y][3] = -1
                    ans += a2*3
                    if a4 == a5:
                        ban[y][4] = -1
                        ans += a5
                elif a3 == a4 and a4 == a5 and a3 != -1:
                    flag = True
                    ban[y][2] = -1
                    ban[y][3] = -1
                    ban[y][4] = -1
                    ans += a3*3

            for _ in range(H):
                for y in reversed(range(1,H)):
                    for x in range(W):
                        if ban[y][x] == -1:
                            ban[y][x] = ban[y-1][x]
                            ban[y-1][x] = -1

            #for y in ban:
            #    print(y)
            #print()

            if not flag:
                break

        print(ans)

Python: def calc(puzzle,H,score):
    flag=False
    for i in range(H-1,-1,-1):
        stones=[]
        for j in range(5):
            now=puzzle[j][i]
            if (len(stones)==0 or stones[-1]==now) and now!=0: stones.append(now)
            elif len(stones)<3: stones=[now]
        if len(stones)>2:
            flag=True
            score+=sum(stones)
            for j in range(5):
                if puzzle[j][i]==stones[0]: 
                    puzzle[j].pop(i)
                    puzzle[j].append(0)
    if flag==True:
        return calc(puzzle,H,score)
    else:
        return score

if __name__=="__main__":
    while True:
        score=0
        H=int(input())
        if H==0:
            break
        puzzle=[[] for _ in range(5)]
        for i in range(H):
            temp=list(map(int,input().split()))
            for j in range(5):
                puzzle[j].insert(0,temp[j])
        score=calc(puzzle,H,score)
        print(score)

Python: from functools import lru_cache

digits = list(map(lambda x: str(x),range(1,10)))

@lru_cache(maxsize=None) 
def check(s,n):  
    return ' '.join([s]*n)

def down(x):
    x = list(x[::-1])   
    while '0' in x:
        x.remove('0')
        x.append('#')
    return x

def main(n):
    data = '\n'.join(map(lambda x: input(), range(n)))  
    score = 0
    while True:
        removed = False
        for d in digits:
            if check(d, 3) in data:
                for i in range(5, 2, -1):
                    if check(d, i) in data:
                        score += int(d) * (data.count(check(d, i))*i)
                        data = data.replace(check(d, i), check('0', i))
                        removed = True
                        break
        if removed == False:
            break
        data = zip(*map(lambda x: x.split(), data.split('\n')))
        data = map(lambda x: down(x), data)
        data = list(map(lambda x: ' '.join(x),zip(*data)))
        data = '\n'.join(data[::-1])
    print(score)    

while True:
    n = int(input())
    if n == 0: break
    main(n)