C :

#include<stdio.h>
int main(){
	int a,b,c,s=0;
	for(a = 1;a <= 5;a++){
		for(b = 1;b <= 5;b++){
			for(c = 1;c <= 5;c++){
				if(a != b && b != c && a!=c){
					s++;
				}
			}
		}
	} 
	
	printf("%d",s);
	return 0;	
}

C++ :

#include<iostream>
using namespace std;
int main(){
    int a,b,c,count=0;
    for(a=1;a<=5;a++)            
        for(b=1;b<=5;b++)        
            for(c=1;a!=b&&c<=5;c++)   
                if(c!=a&&c!=b)  
                {
                	count++;
				}
 cout<<count<<endl;
return 0;
}

Java :

public class Main {
	public static void main(String[] args) {
		int count = 0;
		for(int a =1;a <= 5;a++) {
			for(int b =1;b <= 5;b++) {
				for(int c =1;c <= 5;c++) {
					if(a != b & a != c & b != c) {
						count++;
					}
				}
			}
		}
		System.out.println(count);
	}
}	

Python :

t = 0
for i in range(1, 6):
    for k in range(1, 6):
        for j in range(1, 6):
            if(i != j and j != k and k != i):
                t += 1
print(t)