$#doanthevu$

Code c++:

#include <bits/stdc++.h>
using namespace std;
int main() {
    long long m, n, a;
    cin >> m >> n >> a;
    long long dt = m * n;
    long long tong = dt * a;
    cout << tong << endl;
    return 0;
}

#danglam228

#include<bits/stdc++.h>
#define ll long long
using namespace std;
ll m,n,a;
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    //freopen(".INP","r",stdin);
    //freopen(".OUT","w",stdout);
    cin>>m>>n>>a;
    cout<<m*n*a<<endl;
   return 0;
}