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 <algorithm>
#include <vector>
using namespace std;

int main() {
    int H;
    while (cin >> H, H) {
	vector<vector<int>> mp(H, vector<int>(5));
	for (auto &a : mp) {
	    for (auto &b : a) {
		cin >> b;
	    }
	}
	int score = 0;
	bool down = true;
	while (down) {
	    down = false;
	    for (int h = H - 1; h >= 0; h--) {
		int prev = -1, cnt = 0;
		for (int w = 0; w < 5; w++) {
		    if (prev == mp[h][w]) {
			cnt++;
		    }  else {
			if (cnt >= 3) {
			    for (int ww = w - 1; cnt; ww--, cnt--) {
				score += mp[h][ww];
				mp[h][ww] = 0;
			    }
			}
			prev = mp[h][w];
			cnt = 1;
		    }
		}
		if (cnt >= 3) {
		    for (int ww = 4; cnt; ww--, cnt--) {
			score += mp[h][ww];
			mp[h][ww] = 0;
		    }
		}
	    }
	    for (int w = 0; w < 5; w++) {
		vector<int> rem;
		for (int h = H - 1; h >= 0; h--) {
		    if (mp[h][w] != 0) {
			rem.push_back(mp[h][w]);
		    }
		}
		rem.resize(H, 0);
		reverse(rem.begin(), rem.end());
		for (int h = H - 1; h >= 0; h--) {
		    if (mp[h][w] != rem[h]) {
			down = true;
		    }
		    mp[h][w] = rem[h];
		}
	    }
	}
	cout << score << endl;
    }
    return 0;
}

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

int main(){
  while(1){
    int h;
    cin >> h;
    if(h==0) break;

    vector<vector<int> > board(h, vector<int>(5, 0));
    for(int i=0; i<h; i++){
      for(int j=0; j<5; j++){
        cin >> board[i][j];
      }
    }

    int point=0;
    bool flag = true;
    while(flag){
      flag = false;
      //disappear
      for(int i=0; i<h; i++){
        for(int j=0; j<3; j++){
          int col = board[i][j];
          if(col==0) continue;
          if(board[i][j+1]==col && board[i][j+2]==col){
            flag =true;
            point += col*3;
            board[i][j] = board[i][j+1] = board[i][j+2] = 0;
            if(j<=1 && board[i][j+3]==col){
              point += col;
              board[i][j+3] = 0;
            }else{
              continue;
            }
            if(j==0 && board[i][j+4]==col){
              point += col;
              board[i][j+4] = 0;
            }
          }
        }
      }

      for(int i=0; i<h; i++){
        for(int j=0; j<5; j++){
          cout << board[i][j] << " ";
        }
        cout << endl;
      }
      cout << endl;

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

      for(int i=0; i<h; i++){
        for(int j=0; j<5; j++){
          cout << board[i][j] << " ";
        }
        cout << endl;
      }
      cout << point << endl;

    }

    cout << point << endl;
  }
  return 0;
}

C++: #include<iostream>

using namespace std;

int main(){
while(1){
 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(1){
	bool flg=false;

	for(int y=0;y<H;y++){
		int m =S[y][2];//真ん中覚える
		if(m==0)
			continue;

		if(S[y][0]==m && S[y][1]==m){//012で消える
			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][0]=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][3]==m&&S[y][4]==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-2;y2>=0;y2--){
				if(S[y2][x]!=0){
					S[y][x]=S[y2][x]=0;
					break;
				}
			}
		}
	}
 }
 cout<<sco<<endl;
}
return 0;
}