Go: package main

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

const MaxW = 1000
const MaxN = 1000

type Tuple struct {
	Value  int
	Weight int
}

func nextLine(sc *bufio.Scanner) string {
	sc.Scan()
	return sc.Text()
}

func solve(w int, n int, vws []Tuple) Tuple {
	var dp [MaxN + 1][MaxW + 1]int

	for i := 0; i < n; i++ {
		for j:= w; j > 0; j-- {
			if j < vws[i].Weight {
				dp[i + 1][j] = dp[i][j]
			} else {
				dp[i + 1][j] = int(math.Max(float64(dp[i][j]), float64(dp[i][j - vws[i].Weight] + vws[i].Value)))
			}
		}
	}

	maxValue := dp[n][w]
	minWeight := w

	for j := w - 1; j > 0; j-- {
		if maxValue == dp[n][j] {
			minWeight = j
		} else {
			break
		}
	}

	return Tuple{Value: maxValue, Weight: minWeight}
}

func main() {
	var sc = bufio.NewScanner(os.Stdin)
	index := 1
	for {
		var w, n int
		w, _ = strconv.Atoi(nextLine(sc))
		if w == 0 {
			return
		}
		n, _ = strconv.Atoi(nextLine(sc))

		vws := make([]Tuple, n, n)
		for i := 0; i < n; i++ {
			array := strings.Split(nextLine(sc), ",")
			v, _ := strconv.Atoi(array[0])
			w, _ := strconv.Atoi(array[1])
			vws[i] = Tuple{Value: v, Weight: w}
		}

		t := solve(w, n, vws)
		fmt.Printf("Case %d:\n", index)
		fmt.Println(t.Value)
		fmt.Println(t.Weight)
		index++
	}
}

C++: #include <iostream>
#include <utility>
#include <algorithm>
#include <cstdio>

#define N_MAX 1000	// ??????????????° ?????§???
#define W_MAX 1000  // ?¢¨?????????????????????????????? ?????§???
#define DIAGONAL 1
#define TOP 0

using namespace std;

int dp[N_MAX+1][W_MAX+1], memo[N_MAX+1][W_MAX+1];
int v[N_MAX+1], w[N_MAX+1];
int N, W;

int calcWeight(int _w) {
	int res = 0;

	for (int i = N; i >= 1; i--) {
		if (memo[i][_w] == DIAGONAL) {
			res += w[i];
			_w -= w[i];
		}
	}

	return res;
}

pair<int, int> knapsack() {
	int ans_w, ans_v, max_w;

	// ?????????
	for (int i = 0; i <= N; i++) {
		for (int j = 0; j <= W; j++) {
			dp[i][j] = 0;
		}
	}

	// ????????¨???
	for (int i = 1; i <= N; i++) {
		for (int j = 1; j <= W; j++) {
			if (w[i] <= j) {
				dp[i][j] = max(dp[i-1][j], dp[i-1][j-w[i]] + v[i]);
				memo[i][j] = (dp[i-1][j] < dp[i-1][j-w[i]] + v[i]) ? DIAGONAL : TOP;
			}
			else {
				dp[i][j] = dp[i - 1][j];
				memo[i][j] = TOP;
			}
		}
	}

	// ???????§£?????¢???
	ans_v = -1;
	ans_w = 0;
	for (int i = 1; i <= W; i++) {
		if (ans_v < dp[N][i]) {
			ans_v = dp[N][i];
			max_w = i;
		}
		else if (ans_v == dp[N][i]) {
			if (calcWeight(i) < calcWeight(max_w)) {
				ans_v = dp[N][i];
				max_w = i;
			}
		}
	}

	ans_w = calcWeight(max_w);

	return make_pair(ans_v, ans_w);
}

int main() {
	int cont = 1;
	char c;
	pair<int, int> ans;

	while (cin >> W) {
		if (W == 0)  break;

		cin >> N;

		for (int i = 1; i <= N; i++) {
			cin >> v[i] >> c >> w[i];
		}

		ans = knapsack();

		printf("Case %d:\n%d\n%d\n", cont, ans.first, ans.second);
	}

	return 0;
}

C++: #include<iostream>

using namespace std;

class item
{
public:
	int value;
	int weight;
	bool flag;
	item()
	{
		flag=false;
	}
};

bool input(int *c, int *n, item it[1000])
{
	cin>>*c;
	if(*c==0)
	{
		return false;
	}
	cin>>*n;
	for(int i=0;i<*n;i++)
	{
		char t;
		cin>>it[i].value>>t>>it[i].weight;
	}
	return true;
}

item max(item a, item b)
{
	if(a.value>b.value)
	{
		return a;
	}
	else
	{
		return b;
	}
}

item add(item a, item b)
{
	a.value+=b.value;
	a.weight+=b.weight;
	return a;
}

item table[1000][1000];

item solve(int c, int n, item it[1000])
{
	if(table[c][n].flag==true)
	{
		return table[c][n];
	}
	else
	{
		table[c][n].flag=true;
	}
	if(c==0||n==0)
	{
		table[c][n].value=0;
		table[c][n].weight=0;
	}
	else if(c<it[n-1].weight)
	{
		table[c][n]=solve(c,n-1,it);
	}
	else
	{
		table[c][n]=max(solve(c,n-1,it),add(solve(c-it[n-1].weight,n-1,it),it[n-1]));
	}
	return table[c][n];
}

int main(void)
{
	int c,n;
	item it[1000];
	for(int i=1;input(&c,&n,it);i++)
	{
		item ans=solve(c,n,it);
		cout<<"Case "<<i<<':'<<endl<<ans.value<<endl<<ans.weight<<endl;
	}
}

C++: #include <bits/stdc++.h>
using namespace std;
#define FOR(i, s, n) for(int i = s; i < (int)n; i++)
#define per(i, n) for(int i = n; i >= 0; i--)
#define ROF(i, s, n) for(int i = s; i >= (int)n; i--)
#define FORIT(i, A) for (auto i : A)
#define PRINT(x) cout << (x) << "\n"
#define ALL(a) (a).begin(),(a).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define MP make_pair
#define EACH(i, n) for (__typeof((n).begin()) i = (n).begin(); i != (n).end(); ++i)
#define SZ(a) int((a).size())
#define EXIST(s,e) ((s).find(e)!=(s).end())
#define SORT(c) sort((c).begin(),(c).end())
#define CLR(a) memset((a), 0 ,sizeof(a))
#define dump(x) cout << #x << " = " << (x) << "\n";
#define debug(x) cout << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << "\n";
#define sq(n) (n) * (n)
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef long long LL;
typedef vector<LL> VLL;
typedef vector<VLL> VVLL;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef priority_queue<int> maxpq;
typedef priority_queue< int, vector<int>, greater<int> > minpq;
static const double EPS = 1e-10;
static const double PI = acos( -1.0 );
static const int mod = 10007;
static const int INF = 1 << 25;
static const LL LL_INF = 1152921504606846976;
static const int dx[] = { -1, 0, 1, 0,  1, -1,  1, -1 };
static const int dy[] = { 0, -1, 0, 1 , 1,  1, -1, -1 };

int can_take, n, cnt = 0;
PII dp[ 1001 ][ 1001 ];
vector<PII> Item;
PII ans;

PII solve( int w, int now ) {
	if ( now == n || w == can_take ) {
		return PII( 0, w );
	}
	if ( dp[ now ][ w ].first != -1 ) {
		return dp[ now ][ w ];
	}
	
	PII res = PII( 0, 0 );
	if ( w + Item[ now ].second <= can_take ) {
		res = solve( w + Item[ now ].second, now + 1 );
		res.first += Item[ now ].first;		
	}

	PII d = solve( w, now + 1 );
	if ( res.first < d.first || ( res.first == d.first && res.second > d.second ) ) {
		res = d;
	}
	return dp[ now ][ w ] = res;
}

int main() {
	while ( ~scanf( "%d", &can_take ) && can_take ) {
		printf( "Case %d:\n", ++cnt );
		scanf( "%d", &n );
		Item.resize( n );
		for ( int i = 0; i < n; i++ ) {
			scanf( "%d,%d", &Item[ i ].first, &Item[ i ].second );
		}
		for ( int i = 0; i < 1001; i++ ) {
			for ( int j = 0; j < 1001; j++ ) {
				dp[ i ][ j ] = PII( -1, -1 );
			}
		}
		ans = solve( 0, 0 );
		printf( "%d\n", ans.first );
		printf( "%d\n", ans.second );
	}
	return 0;
}

C++: #include <iostream>
#include <algorithm>
#include <vector>
#include <map>
#include <cmath>

#define rep(a, b, c) for (int a = b; a < (c); a++)
#define repe(a, b, c) for (int a = b; a <= (c); a++)
#define repr(a, b, c) for (int a = b; a > (c); a--)
#define repre(a, b, c) for (int a = b; a >= (c); a--)

using namespace std;

int main() {
    for (int c = 1; ; c++) {
        int W, N;
        cin >> W;
        if (W == 0) break;
        cin >> N;
        vector< vector<int> > dp(N + 1, vector<int>(W + 1, 0));
        int v, w;
        char ch;
        rep(i, 0, N) {
            cin >> v >> ch >> w;
            repe(j, 0, W - w) {
                dp[i + 1][j + w] = max(dp[i][j + w], dp[i][j] + v);
            }
        }
        int ans_w = 0, ans_v = 0;
        repre(i, W, 0) {
            if (ans_v <= dp[N][i]) {
                ans_w = i;
                ans_v = dp[N][i];
            }
        }
        cout << "Case " << c << endl;
        cout << ans_v << endl;
        cout << ans_w << endl;
    }
    return 0;
}