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)
}

C++: #include <iostream>
#include <cmath>
#include <cstring>
#include <utility>
using namespace std;
 
int solve(int x,int p){
    return floor(p*(1+x*0.01));
}
 
int main() {
    int n;
    int a[6][10];
    memset(a,0,sizeof(a));
    while(cin >> n && n){
        for(int i=0;i<n;i++) for(int j=0;j<5;j++) cin >> a[j][i];
        int sum=0;
        int csum;
        do{
            csum=sum;
            for(int i=0;i<n;i++){
                int current=0;
                int count=0;
                int start;
                for(int j=0;j<6;j++){
                    if(current != a[j][i]){
                        if(count>=3){
                            sum+=count*current;
                            for(int k=1;k<=count;k++){
                                a[j-k][i]=0;
                            }
//                          cout << "count:" << count << endl;
//                          cout << "current:" << current << endl;
                        }
                        current = a[j][i];
                        count=1;
                    } else {
                        count++;
                    }
                }
            }
/*          for(int i=0;i<n;i++){
                for(int j=0;j<5;j++){
                    cout << a[j][i] << " ";
                }
                cout << endl;
            }*/
            for(int j=0;j<5;j++){
                for(int i=n-1;i>0;i--){
                    if(a[j][i]==0){
                        for(int k=i-1;k>=0;k--){
                            if(a[j][k]!=0){
//                              cout << j << " swap " << i << " " << k << endl;
                                swap(a[j][k],a[j][i]);
                                break;
                            }
                        }
                    }
                }
            }
        }while(csum!=sum);
        cout << sum << endl;
    }
    return 0;
}

C++: #include<iostream>
using namespace std;

int main(){
	while(true){
		int H;
		cin>>H;
		
		if(H==0)
			break;
		
		int S[10][5];
		for(int y=0;y<h;y++){
			for(int x=0;x<5;x++){
				cin>>S[y][x];
		
		int sco=0;
		
		while(true){
			bool flg =false;
		
			for(int y=0;y<H;y++){
				int m=S[y][2];
				if(m==0)
					continue;

				if(S[y][0]==m && S[y][1]==m){
					sco += m*3;
					S[y][0]=S[y][1]=S[y][2]=0;
					flg=true;
					if(S[y][3]==m){
					sco += m;
					S[y][3]=0;
					if(S[y][4]==m){
					sco += m;
					S[y][4]=0;
					}
					}
				}
				else if(S[y][1]==m&&S[y][3]==m){
					sco += m*3;
					S[y][1]=S[y][2]=S[y][3]=0;
					flg=true;
					if(S[y][4]==m){
					sco += m;
					S[y][4]=0;
					}
				}
				else if(S[y][4]==m&&S[y][3]==m){
					sco += m*3;
					S[y][2]=S[y][3]=S[y][4]=0;
					flg=true;
				}
				if(!flg)
					break;
	
				for(int x=0;x<5;x++){
					for(int y=H-1;y>=0;y--){
						if(S[y][x]!=0)
							continue;
		
						for(int y2=y-1;y2>=0;y2--){
							if(S[y2][x]!=0){
								S[y][x]=S[y2][x];
								S[y2][x]=0;
								break;
							}
						}
					}
				}

			}

			cout<<sco<<endl;
			}
		return 0;
	}

C++: //莉頑律縺ョ謌先棡*AOJ0027*AOJ0028


#include<iostream>
#include<string>
#include<vector>
#include<cstdio>
#include<sstream>
#include<algorithm>
#include<cmath>
#include<map>
using namespace std;
int stoi(string x){stringstream ss;ss<<x;int tmp;ss>>tmp;return tmp;}
string itos(int x){stringstream ss;ss<<x;return ss.str();}
int main(){
	
	int h,ans=0;
	while(true){
	cin>>h;
	if(h==0)break;
	ans=0;
	int ta[200][5]={{0},{0}};
	for(int i=0;i<h;i++)for(int j=0;j<5;j++)cin>>ta[i][j];
	//逶、髱「縺ョ蟄伜惠縺励↑縺?→縺薙ｍ縺ッ0
	while(true){

	bool f=1;
	for(int i=0;i<h;i++){
	int cnt=0,fi=-1;
		for(int j=0;j<3;j++){
			if(ta[i][j]==ta[i][j+1]&&ta[i][j]==ta[i][j+2]&&ta[i][j]!=0){
			cnt++;
			if(fi==-1)fi=j;
			}
		}//endfor
		if(cnt!=0)ans+=ta[i][fi]*(2+cnt),f=0;
		if(cnt!=0)for(int j=0;j<2+cnt;j++)ta[i][fi+j]=0;
	}//endfor
	if(f)break;
	//關ス縺ィ縺吝?逅?	for(int i=h-2;i>=0;i--){
		for(int j=0;j<5;j++){
			int ti=i;
			while(true){
			if(ti==h-1||ta[ti+1][j]!=0)break;
			ta[ti+1][j]=ta[ti][j];
			ta[ti][j]=0;
			ti++;
			}//endwhile
		}//endfor
	}//endfor
	//for(int i=0;i<h;i++)printf("%d%d%d%d%d\n",ta[i][0],ta[i][1],ta[i][2],ta[i][3],ta[i][4]);
	//printf("\n");
	}//endwhile
	cout<<ans<<endl;
	}//endwhile
	return 0;
}