C :

#include<stdio.h>
void main()
{
	int a,b,c,i=0;
	for(a=1;a<100;a++){
  		for(b=1;b<100-9*a;b++){
  			c=100-9*a-b;
  			if(a*2+b*2+c*4==100&&9*a+b+c==100){
  					i++;
					printf("%d %d %d\n",a,b,c);
			}
		} 
	}
	 printf("%d\n",i);
}

C++ :

#include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;

int main(){
	int a,b,c,s=0;
	for(a=1;a<=10;a++){
		for(b=1;b<=50;b++){
			for(c=1;c<=50;c++){
				if(a*9+b+c==100&&a*2+b*2+c*4==100){
					cout<<a<<" "<<b<<" "<<c<<endl;
					s=s+1;
				}
			}
		}
	}cout<<s<<endl;
	
}

Python :

c=0
for i in range(1, 100):
    for j in range(1, 100):
        for k in range(1, 100):
            if 9 * i + j + k == 100 and 2 * i + 2 * j + 4 * k == 100:
                print(i, end=' ')
                print(j, end=' ')
                print(k)
                c += 1
print(c)