Go: package main

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

var scanner = bufio.NewScanner(os.Stdin)

func main() {
	for scanner.Scan() {
		buf := strings.Split(scanner.Text(), " ")
		if buf[0] == "0" {
			break
		}
		q1, _ := strconv.Atoi(buf[0]) // 買うべき鶏肉の量の下限(g)
		b, _ := strconv.Atoi(buf[1])  // 予算
		c1, _ := strconv.Atoi(buf[2]) // 会津地鶏の値段(/100g)
		c2, _ := strconv.Atoi(buf[3]) // 普通の鶏肉の値段(/100g)
		q2, _ := strconv.Atoi(buf[4]) // 会津地鶏の買える量の上限(g)
		maxAizuChiken := min(b/c1, q2)
		if maxAizuChiken <= 0 {
			fmt.Println("NA")
			continue
		}
		if c2 >= c1 {
			maxNormalChiken := (b - maxAizuChiken*c1) / c2
			if maxAizuChiken+maxNormalChiken < q1 { // 買い切ったけども必要な鶏肉の下限に達しなかった
				fmt.Println("NA")
			} else {
				fmt.Println(maxAizuChiken, maxNormalChiken)
			}
			continue
		}
		if (b-c1)/c2+1 < q1 { // 会津地鶏を1単位+普通の鶏肉を予算目一杯買ったが買うべき下限を超えなかった
			fmt.Println("NA")
			continue
		}
		// 二分探索
		low, high := 0, maxAizuChiken+1
		for high-low > 1 {
			mid := (low + high) / 2
			if check(mid, b, c1, c2, q1) {
				low = mid
			} else {
				high = mid
			}
		}
		fmt.Println(low, (b-low*c1)/c2)
	}
}

func check(mid, b, c1, c2, q1 int) bool {
	if mid+(b-mid*c1)/c2 < q1 {
		return false
	}
	return true
}

func min(a, b int) int {
	if a > b {
		return b
	}
	return a
}

C++: 
#define _CRT_SECURE_NO_WARNINGS
#define _USE_MATH_DEFINES
#include <cfloat>
#include <climits>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <iostream>
#include <memory>
#include <string>

#include <algorithm>
#include <complex>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <vector>
#include <bitset>

using namespace std;

#ifdef _MSC_VER
#define __typeof__ decltype
#define strtok_r strtok_s
#endif

#define ITER(c)             __typeof__((c).begin())
#define FOREACH(it, c)      for (ITER(c) it=(c).begin(); it != (c).end(); ++it)
#define RITER(c)            __typeof__((c).rbegin())
#define RFOREACH(it, c)     for (RITER(c) it=(c).rbegin(); it != (c).rend(); ++it)
#define REP(i, n)           REPEAT(i, 0, n)
#define RREP(i, n)          RREPEAT(i, 0, n)
#define REPEAT(i, k, n)     for(int i = (k); i < ((k)+(n)); ++i)
#define RREPEAT(i, k, n)    for(int i = (k)+(n)-1; i >= (k); --i)
#define FROMTO(i,f,t)       for(int i = f; i < t; i++)
#define ALL(c)              (c).begin(), (c).end()
#define LLPOW(p1,p2)        ((ll)pow((double)(p1), (int)p2))
#define ESIZEOF(A)          (sizeof(A)/sizeof((A)[0]))
#define CIN_NO_SYNC         do { cin.tie(0); ios_base::sync_with_stdio(false); } while(0)
#define GETSTR(p)           fgets((p), sizeof(p), stdin)
#define CHOMP(p)            do{ char *_q = (p) + strlen(p)-1; if(*_q == '\n' || *_q == '\r') *_q = 0; } while(0)
#define FILL(m,v)           memset(m, v, sizeof(m))
#define mp                  make_pair
#define pb                  push_back
template<class _T> _T MAX(_T p1,_T p2){return (p1>p2)?p1:p2;} 
template<class _T> _T MIN(_T p1,_T p2){return (p1<p2)?p1:p2;} 
template <class _Tv> inline string join(const _Tv &v,string sep=" "){
    ostringstream s;FOREACH(it,v){if(it!=v.begin())s<<sep;s<<*it;};return s.str();
}

typedef long long ll;
typedef unsigned long long ull;
typedef double D;
typedef complex<D> P;
typedef vector<int> VI;
typedef vector<VI> VVI;
#define X real()
#define Y imag()
#define EPS (1e-9)
#define DEQ(p1,p2) (abs((p1)-(p2)) < EPS)

#ifdef _DEBUG
template<class _Tv> inline void _prfe(const char *_n,const _Tv _c,bool _p=false){
    ITER(_c) _it=_c.begin();
    if(_p){cout<<_n<<" = ["<<endl;for(;_it!=_c.end();++_it)cout<<"    "<<*_it<<endl;cout<<"]"<<endl; }
    else{cout<<_n<<" = [ ";if(_c.size()){cout<<*_it++;for(;_it!=_c.end();++_it)cout<<", "<<*_it;}cout<<" ]"<<endl; }
}
ostream &operator<<(ostream &os, const pair<int,int> &p){return(os<<"("<<p.first<<","<<p.second<<")");}
#define pf printf
#define pr(n) do{cout<<#n" = "<<(n)<<endl;}while(0)
#define prfe(n) _prfe(#n, n)
#define prfep(n) _prfe(#n, n, true)
#define dbgchk(n) do{if(n)throw;}while(0)
#else
#define pf(...) /* */
#define pr(...) /* */
#define prfe(...) /* */
#define prfep(...) /* */
#define dbgchk(...) /* */
#endif

int main(){
    int q1, b, c1, c2, q2;
    while(cin >> q1 >> b >> c1 >> c2 >> q2){
        if(b < c1+(q1-1)*c2 && b < q1*c1){ cout << "NA" << endl; continue; }
        int qq1,qq2,b1;
        qq1 = MIN(q2, q1);
        if(c1 > c2) qq1 = MIN(qq1, (b-q1*c2)/(c1-c2));
        qq2 = q1 - qq1;
        pf("qq1 = %d, qq2 = %d, b = %d, q1*c2 = %d, c1-c2 = %d\n", qq1, qq2, b, q1*c2, c1-c2);
        b1 = b - (qq1*c1+qq2*c2); qq1 = MIN(q2, qq1 + b1/c1);
        b1 = b - (qq1*c1+qq2*c2); qq2 = qq2 + b1/c2;
        cout << qq1 << " " << qq2 << endl;
    }
    return 0;
}

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

int main(void)
{
	int q1, b, c1, c2, q2;
	
	while(1){
		scanf("%d", &q1);
		if (q1 == 0) break;
		scanf("%d %d %d %d", &b, &c1, &c2, &q2);
		
		if (c1 <= c2){
			int x = min(b/c1, q2);
			int y = (b - (x * c1)) / c2;
			if ((x + y) < q1){
				printf("NA\n");
			}
			else {
				printf("%d %d\n", x, y);
			}
		}
		else {
			int x = min(min((b - (c2 * q1)) / (c1 - c2), q2), (b / c1));
			int y = (b - (x * c1)) / c2;
			if(x <= 0){
				printf("NA\n");
			}
			else {
				printf("%d %d\n", x, y);
			}
		}
	}
	return 0;
}

C++: #include <iostream>
#include <algorithm>
using namespace std;
int q1, b, c1, c2, q2;
int main() {
	while (cin >> q1, q1) {
		cin >> b >> c1 >> c2 >> q2;
		int ret1 = -1, ret2 = -1;
		for (int x = 1; x <= q2; x++) {
			for (int y = max(q1 - x, 0); c1 * x + c2 * y <= b; y++) {
				ret1 = x;
				ret2 = y;
			}
		}
		if(ret1 != -1) cout << ret1 << ' ' << ret2 << endl;
		else cout << "NA" << endl;
	}
	return 0;
}

C++: #include <iostream>

using namespace std;

int main()
{
  int q1, b, c1, c2, q2, s, t, cost;

  while(1){
    cin >> q1;
    if(q1 == 0){
      break;
    }
    cin >> b >> c1 >> c2 >> q2;

    s = b / c1;
    if(s > q2){
      s = q2;
    }
    t = q1 - s;
    if(t < 0){
      t = 0;
    }
    cost = c1*s + c2*t;
    if(cost > b){
      while(s > 0 && cost > b){
	cost -= c1;
	s--;
      }
    }
    if(s <= 0){
      cout << "NA" << endl;
      continue;
    }
    while(cost+c2 <= b){
      t++; 
      cost+=c2;
    }
    if(s+t < q1){
      while(s+t < q1){
	cost -= c1;
	s--;
	while(cost+c2 <= b){
	  cost += c2;
	  t++;
	}
      }
    }
    cout << s << " " << t << endl;
  }

  return 0;
}