#include <iostream>
#include <math.h>
using namespace std;

int main()
{
for (int i =1; i <= 100; i++){
   cout << i << endl;
}
int i = 1;
while (i < 101){
    cout << i << endl;
    i++;
}
i = 0;
do {
    cout << i << endl;
   i++;
} while (i < 101);
}