3

  #
 ##
###

5

    #
   ##
  ###
 ####
#####

6

     #
    ##
   ###
  ####
 #####
######

#include <iostream>
using namespace std;
int main () {
    int input;
    cin >> input;
    if (input % 2) {
        cout << input << " is odd\n";
    }
    else {
        cout << input << " is even\n";
    }
}

#include <iostream>
using namespace std;
int main () {
    cout << "3 6 9\n";
}

#include <iostream>
using namespace std;
int main () {
    if (!(1568963 % 45631)) {
        cout << "1568963\n";
    }
    if (!(1568964 % 45631)) {
        cout << "1568964\n";
    }
    if (!(1568965 % 45631)) {
        cout << "1568965\n";
    }
    if (!(1568966 % 45631)) {
        cout << "1568966\n";
    }
    /* ... */
}

int i = 1;
while (i <= 10) {
  std::cout << i << std::endl;
  i++;
}

int i = 2;
int sum = 0;
 
while (i <= 100) {
  sum += i;
  i += 2;
}
 
std::cout << sum << std::endl;

int input, cnt = 0;
cin >> input;
 
while (input) {
  input /= 10;
  cnt++;
}
 
std::cout << cnt << std::endl;

while (true) {
  /* run forever */
}

while (1) {
  /* run forever */
}

int answer = 127;
int number = 0;
 
do {
  std::cout << "Enter a number" << std::endl;
  std::cin >> number;
}
while (number != answer);
 
std::cout << "number is 127" << std::endl;

int answer = 127;
int guess;
while (true) {
  std::cout << "Enter a number" << std::endl;
  std::cin >> guess;
  if (guess == answer) {
    std::cout << "You've got it!" << std::endl;
    break;
  } else {
    std::cout << "Wrong..." << std::endl;
  }
}

int a = 0;
int b = 0;
while (true) {
  std::cin >> a >> b;
  if (b == 0)
    continue;
  std::cout << "a / b = " << a / b << std::endl;
}

int n;
std::cin >> n;
 
int i = 1;
while (i <= n) {
  /* 印出第i層 */
  i++;
}

  #

 ##

###

int j = 0;
while (j < n - i) {
  std::cout << " ";
  j++;
}
j = 0;
while (j < i) {
  std::cout << "#";
  j++;
}
std::cout << std::endl;

int n;
std::cin >> n;
 
int i = 1;
while (i <= n) {
  int j = 0;
  while (j < n - i) {
    std::cout << " ";
    j++;
  }
  j = 0;
  while (j < i) {
    std::cout << "#";
    j++;
  }
  std::cout << std::endl;
  i++;
}