Go: package main
import (
	"fmt"
	"os"
	"strconv"
	"bufio"
	"math"
)

var sc = bufio.NewScanner(os.Stdin)

func main(){
	sc.Split(bufio.ScanWords)
	n := nextInt()
	ans := calc(n)
	fmt.Println(ans)
}

func calc(n int) float64{
	tmp := 100000.0
	for i:=0; i<n; i++{
		tmp*=1.05
		// tmp = Ceil(tmp, -4) なぜかうまくいかない
		tmp = Ceil(tmp, -3)
		fmt.Printf("now tmp: %d\n", int(tmp))
	}
	return tmp
}

func Ceil(f float64, places int) float64{
	shift := math.Pow(10, float64(places))
	return math.Ceil(f * shift)/shift
}

func next()string{
	sc.Scan()
	return sc.Text()
}

func nextInt()int{
	a, _ := strconv.Atoi(next())
	return a
}

C++: #include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <algorithm>
#include <complex>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cctype>
#include <cmath>
#include <cassert>

using namespace std;


#define all(c) ((c).begin()), ((c).end())
#define debug(c) cerr << "> " << #c << " = " << (c) << endl;
#define iter(c) __typeof((c).begin())
#define tr(i, c) for (iter(c) i = (c).begin(); i != (c).end(); i++)
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define REP(i, a, b) for (int i = (int)(a); i <= (int)(b); i++)

#define mp make_pair
#define fst first
#define snd second
#define pb push_back


const double EPS = 1e-10;


typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> pii;
typedef complex<double> P;



int main(){
	int n; cin >> n;
	int m = 100000;
	while(n--) {
		m *= 1.05;
		m = m / 1000 * 1000 + 1000 * (m % 1000 != 0);
	}
	cout<< m << endl;
	return 0;
}

C++: #include<iostream>
#include<stdio.h>
int main(){
	
	int n,i,a,b,okane=100000;

    std::cin>>n;
	for(i=0;i<n;i++){	
		okane=okane*1.05;
		if(okane%1000!=0){
			a=okane%1000;
			b=1000-a;
			okane=okane+b;
			
			
			
			
			}

		}
    std::cout<<okane;

	
	
	
	
	
	

	return 0;
}

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

#define INITIAL_DEBT 100000 // 10万

int main()
{
        int n;
        cin >> n;
        
        int debt = INITIAL_DEBT;
        for(int i=1; i<=n; i++){
                debt *= 1.05; // 利子(5%/1week)
                int rem = debt%1000; // 1,000円以下の端数
                if( rem ){ debt = debt - rem + 1000; }
        }
        cout << debt << endl;
                
        return 0;
}

C++: #include <iostream>
using namespace std;
int main(){
int n;
scanf("%d",&n);
double base = 100000;
for(int i=0;i<n;i++){
base*=1.05;
}
printf("%d\n,(int)base);
}

C++: import java.math.BigDecimal;
import java.util.Scanner;

class Main {

    public static final int DEPT = 100000;

    public static final BigDecimal INTEREST = new BigDecimal(0.05);

    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        int week = Integer.parseInt(s.next());

        BigDecimal repay = new BigDecimal(DEPT);

        for (int i = 0; i < week; ++i) {
            repay = repay.add(repay.multiply(INTEREST));

        }

        s.close();
        System.out.println(repay.divide(new BigDecimal(10000), 0,
                BigDecimal.ROUND_CEILING).multiply(new BigDecimal(10000)));

    }
}

C++: #include<iostream>
using namespace std;
int main()
{
  int n;

  cin >> n;

  int ans = 100000;

  for(int i = 0;i < n;i++)
    {
      ans += ans*5/100;

      if(ans % 1000 != 0)
	{
	  ans += 1000 - ans % 1000;
	}
     
    }
  
  
  
  cout << ans << endl;
}

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

int main(){
	int n;
	cin >> n;
	int s = 100000;
	for(int i = 0 ; i < n ; i++)
		s = (s*105/100+999)/1000*1000;
	cout << s << endl;
}

C++: #include <iostream>
#include<cmath>

using namespace std;
            
int main(){

    int syakkin = 100000;
    int syu;
    double d;
    cin >> syu;
    
    for(int i = 0; i < syu; ++i){
        syakkin = (syakkin + ((syakkin / 100) * 5));
        syakkin = ceil(syakkin / 1000.0) * 1000;
    }

    cout << syakkin << endl;
    
	return 0;
}

C++: #include <iostream>
using namespace std;
int main()
{
    int n;
    int m=100000;
    cin>>n;
    for(int i=0;i<n;i++){
        m*=1.05;
        if(m%1000!=0){
        int a;
        a=m%1000;
        m+=1000-a;
    }


    }

    cout<<m<<endl;
    return 0;
}

C++: #include <iostream>

using namespace std;

int main()
{
	int  a = 100000;
	int b;
	cin >> b;
	int x;
	for (int i = 0; i < b; i++)
	{
		a = a*1.05;
		x = a % 1000;
		if (x>0)
		{
			a = a + 1000 - x;
		}
	}
	cout << a << endl;


	return 0;
}

C++: #include<iostream>

using namespace std;

int main(void){
  int n;
  int debt = 100000;
  cin >> n;
  for(int i = 0;i < n;i++){
    debt *= 1.05;
    if(debt % 1000 != 0){
      debt += 1000 - (debt % 1000);
    }
  }   
  cout << debt << endl;
  return 0;
}

C++: #include <cstdio>
#include <cstring>

int main(){
    int x, a;
    while(scanf("%d", &a) != EOF){
        x = 100000;
        for(;a > 0;a--){
            x *= 1.05;
            if(x % 1000)
                x = (x / 1000 + 1) * 1000;
}
        printf("%d\n", x);

    }
    return 0;
}

C++: #include <iostream>
#include <string>
using namespace std;
int main(void){
    int n,dept=100000;
    cin >> n;
    for(int i=0;i<n;i++){
        dept=dept*1.05;
        if((dept%1000)>0){
            dept=(dept/1000+1)*1000;
        }
    }
    cout << dept << endl;
    return 0;
}

C++: #include <cstdio>
#include <cmath>

int main() {
    int n;
    scanf("%d", &n);
    
    long long int r = 100000;
    for (int i = 0; i < n; ++i) {
        r += r * 0.05;
        int s = r % 1000 ? 1000 : 0; 
        r = r / 1000 * 1000;
        r += s;
    }
    printf("%lld\n", r);
}

C++: #include<iostream>
using namespace std;
int main(){
	int a,b,rone=100000;
	cin>>a;
	for(int i=0;i<a;i++){
		rone *=1.05;
		b = rone % 1000;
		rone -= b;
		if(b>0)	rone += 1000;		
	}
	cout<<rone<<endl;
}

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

int
main(void)
{
	char line[80];
	int n;
	long s = 100000;
	
	if (fgets(line, sizeof line, stdin)) {
		if (sscanf(line, "%d", &n) == 1) {
			for (int i = 0; i < n; i++) {
				s = s * 1.05;
				s = ceil(s / 1000.0) * 1000;
			}

			printf("%ld\n", s);
		}
	}

	return 0;
}

C++: #include <cstdio>
#include <cstdlib>
  
int main(){
 int n;
 scanf("%d",&n);
   
 int ans = 100000;
 for(int i = 0;i < n;i++){
  ans += (double)ans * 0.05;
  if(ans % 1000 > 0) ans = ans - (ans % 1000) + 1000;
 }
 printf("%d\n",ans);
 return 0;
}

C++: #include <iostream>
const int first = 100000;

int get_dept(int n) // n週間後(切り上げ前)
{
    int dept = first;
    for (int i=0; i<n; i++) {
        dept *= 1.05;
    }
    return dept;
}
int round_up(int price) // 1000円未満を切り上げ
{
    if (price <= 10000) {
        return price;
    }
    int complement  = 10000 - price%10000; // 補数
    return (price + complement);
}
int main()
{
    int n;
    std::cin  >> n;
    std::cout << (round_up(get_dept(n))) << std::endl;
}

C++: #include <iostream>

using namespace std;

int main() {

	int n, debt=100000;

	cin >> n;
	for(int i=0; i<n; i++) {
		debt*=1.05;
	}
	debt+=9999;
	debt/=10000;
	debt*=10000;
	cout << debt << endl;

	return 0;

}

C++: #include <iostream>
#include <cmath>
#include <cstdio>
#define DEFAULT 100000
#define EPS 1e-10
using namespace std;

typedef long long ll;

double ceiler(double start) {
    //cout << start << endl;
    start /= 1000;
   // start += EPS;
    //cout << "start:" << start << endl;
    start = ceil(start);
    start *= 1000;
    return(start);
}

void check(int num) {
    cout << ceiler(num) << endl;
}

int main(void) {
    double start = DEFAULT;
    int num; cin >> num;
    for(int r = 0; r < num; r++) {
        start *= 1.05;
        start = ceiler(start);
        //cout << start << endl;
    }
    printf("%d\n", (int)start);
    return(0);
}