Go: package main

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

var scanner = bufio.NewScanner(os.Stdin)

func main() {
	for scanner.Scan() {
		n, _ := strconv.Atoi(scanner.Text())
		if n == 0 {
			break
		}

		sales := make([]int, 4000)
		members := make([]int, 0)
		memberCheck := make(map[int]bool)

		for i := 0; i < n; i++ {
			scanner.Scan()
			input := strings.Split(scanner.Text(), " ")
			e, _ := strconv.Atoi(input[0])
			p, _ := strconv.Atoi(input[1])
			q, _ := strconv.Atoi(input[2])

			if e >= 1 && e <= 4000 && memberCheck[e] == false {
				members = append(members, e)
				memberCheck[e] = true
			}
			sales[e-1] += p * q
		}

		emptyFlag := true
		for _, v := range members {
			if sales[v-1] >= 1000000 {
				fmt.Println(v)
				emptyFlag = false
			}
		}

		if emptyFlag == true {
			fmt.Println("NA")
		}
	}
}

C++: #include <iostream>

using namespace std;

int main()
{
    while(1)
    {
        int i=0;
        int na=0;
        cin>>i;
        if(i==0)
            break;
        else
        {
            int h[4001];
            for(int k=0;k<=4000;k++)
            {
                h[k]=0;
            }
            for(int k=1;k<=i;k++)
            {
                int j=0;int l=0;int m=0;
                cin>>j>>l>>m;
                h[j]+=l*m;

            }
            for(int k=1;k<=4000;k++)
            {
                if(h[k]>=1000000)
                {
                    cout<<k<<endl;
                    na=1;
                }

            }
            if(na==0)
            {
                cout<<"NA"<<endl;
            }

        }
    }

    return 0;
}

C++: #include <stdio.h>
#include <stdbool.h>

int main(void)
{
    int data_num, data_num_update;
    int employee_num[4000] = {};
    long long unit_sale_num[4000] = {};
    long long sale_num[4000] = {};
    
    while ((scanf("%d", &data_num)) != EOF) {
        
        if (data_num == 0) break;
        
        data_num_update = data_num;
        for (int i = 0; i < data_num; ++i) {
            scanf("%d %lld %lld", &employee_num[i], &unit_sale_num[i],  &sale_num[i]);
        }
        
        int data_check = 0;

        while (data_check < data_num - 1) {
            for (int i = data_check + 1; i < data_num; ++i) {
                if (employee_num[data_check] == employee_num[i]) {
                    sale_num[data_check] += sale_num[i];
                    unit_sale_num[data_check] += unit_sale_num[i];
                    data_num_update--;
                }
            }
            data_check++;
        }
        
        bool result_flag = true;
        
        for (int i = 0; i < data_num; ++i) {
            if (unit_sale_num[i] * sale_num[i] >= 1000000) {
                printf("%d\n", employee_num[i]);
                result_flag = false;
            }
            
            if (result_flag) {
                printf("NA\n");
                break;
            }
        }
    }

    return 0;
}

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

int main() {
    while (true) {
        int n;
        cin >> n;
        if (n == 0) {
            break;
        }
        queue<int> que;
        long long employeeSales[4001] = {};
        for (int i = 0; i < n; i++) {
            int employee, price, num;
            cin >> employee >> price >> num;
            employeeSales[employee] += (long long) price * num;
            que.push(employee);
        }
        bool NAFlag = true;
        while (!que.empty()) {
            int i = que.front();
            que.pop();
            if (employeeSales[i] >= 1000000) {
                cout << i << endl;
                employeeSales[i] = -1;
                NAFlag = false;
            }
        }
        if (NAFlag) {
            cout << "NA" << endl;
        }
    }
}

C++: // #define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <stack>
#include <cmath>
#include <cstdlib>
#include <functional>
#include <locale>
#include <cctype>
#include <sstream>	// istringstream
using namespace std;

typedef long long LL;
typedef vector<int> VI;
typedef vector<VI> VVI;

#define MP make_pair
#define fastIO	cin.tie(0); ios::sync_with_stdio(false);
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
//for gcc (未test)
// #define FOREACH_IT(it,c)	for(typeof(c)::iterator it=(c).begin(); it!=(c).end(); ++it)
//for Visual Studio
#define foreach_it(type,it,c) for(type::iterator it=c.begin(); it!=c.end(); ++it)

// #defineの初利用にあたって参考にした http://peroon.hatenablog.com/entry/20091123/1258966199
// iteratorのforLoop                   http://bokko.hatenablog.com/entry/20090320/1237494217
// fastIO                              https://gist.github.com/rigibun/7905920

void solveAndOutput(map<int, long long> data, VI bangouList){
	int outputCount = 0;

	FOR(i, 0, bangouList.size()){
		if (data[bangouList[i]] >= 1000000){
			cout << bangouList[i] << endl;
			outputCount++;
		}
	}
	if (outputCount == 0)
		cout << "NA" << endl;
}

int main(){
	// sankou http://judge.u-aizu.ac.jp/onlinejudge/review.jsp?rid=97994#1

	long long n;
	// 重複なし、自動ソート
	map<int, long long> data;
	// 重複あり、ソートなし -> 重複するものは格納しないようにしたい.
	VI bangouList;
	fastIO;

	while (cin >> n, n){
		data.clear();
		bangouList.clear();
		while (n--){
			int bangou = 0, tanka = 0, suu = 0;
			cin >> bangou >> tanka >> suu;
			if(data[bangou] == 0)
				bangouList.push_back(bangou);
			data[bangou] += tanka * suu;
		}
		// solveAndOutput(data, bangouList);
		bool flag = true;
		for (int i = 0; i<bangouList.size(); i++){
			if (data[bangouList[i]] >= 1000000){
				flag = false;
				cout << bangouList[i] << endl;
			}
		}
		if (flag)cout << "NA" << endl;
	}
	return 0;
}

C++: #include<iostream>
#include<vector>
#include<algorithm>
int main() {
	int n;
	std::cin >> n;
	std::vector<int> A;
	while (n != 0) {
		std::vector<int> m(n);
		std::vector<std::vector<int>> V(n, std::vector<int>(3));
		for (int i = 0;i < n;++i) {
			for (int j = 0;j < 3;++j) {
				std::cin >> V[i][j];
			}
		}
		for (int i = 0;i < n;++i) {
			m[i] = V[i][1] * V[i][2];
		}
		sort(V.begin(), V.end());
		for (int i = 0;i < n;i++) {
			for (int j = 0;j < n;++j) {
				if (i < j) {
					if (V[i][0] == V[j][0]) {
						m[i] += m[j];
						m[j] = 0;
					}
				}
			}
		}
		for (int i = 0;i < n;++i) {
			if (m[i] >= 1000000) {
				A.push_back(V[i][0]);
			}
		}
		std::cin >> n;
	}
	return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
#define all(vec) vec.begin(),vec.end()
typedef long long int ll;
typedef pair<ll,ll> P;
const ll MOD=10000;
const ll INF=1000000010;
const ll LINF=1000000000000000010;
const int MAX=100001;
int dx[8]={0,1,0,-1,1,-1,1,-1};
int dy[8]={1,0,-1,0,1,-1,-1,1};
int dp[310][310][610];
int main(){
    int n;
    while(cin>>n,n){
        bool f=true;
        int e[5000]={};
        for(int i=0;i<n;i++){
            ll id,p,q;
            cin>>id>>p>>q;
            e[id]+=p*q;
            if(e[id]>=1000000){
                f=false;
                cout<<id<<endl;
            }
        }
        if(f){
            cout<<"NA"<<endl;
        }
    }
	return 0;
}

C++: #include<bits/stdc++.h>

using namespace std;

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

    vector<pair<int,int>> data;
    vector<int> nanum;
    for(int i = 0;i < n;++i){
      int num,sa,ko;
      cin>>num;
      cin>>sa;
      cin>>ko;

      int sum = sa * ko;

      if(i == 0){
        nanum.push_back(num);
        data.push_back(make_pair(num,sum));
      }
      else{
        auto a = find(nanum.begin(),nanum.end(),num);
        if(a == nanum.end()){
          nanum.push_back(num);
          data.push_back(make_pair(num,sum));
        }
      }
    }

    int check = 0;
    for(pair<int,int> e : data){
      if(e.second >= 1000000){
        check = 1;
        cout<<e.first<<endl;
      }
    }
    if(check == 0){
      cout<<"NA"<<endl;
    }
  }

  return 0;
}