#include <bits/stdc++.h>
using namespace std;
int main(){
	double a,c=1;
	cin>>a;
    for(int i=1;i<=a;i++){
    	for(int j=1;j<=i;j++){
    		cout<<i<<"*"<<j<<"="<<i*j<<" "; 
		}
		cout<<endl;
	}
	
	return 0;
}

for 循环求和

#include <bits/stdc++.h>
using namespace std;
int main(){
	int n, sum = 0;
	cin >> n;
	for (int i = 1;i <= n;i++) {
		sum += i;
	}
	cout << sum << endl;
	return 0;
}

好金币

#include <bits/stdc++.h>
using namespace std;
int main(){
	int n, d = 1, s = 1, c = 0;
	cin >> n;
	while(d <= n){
		for(int i = 1; i <= s; i++) {
			c += s;
			d++;
			if(d > n) {
				break;
			}			
		}
		s++; 
	}
	cout << c << endl;
	return 0;
	
}

还有最好的a+b

#include <bits/stdc++.h>
using namespace std;
int main() {
	int a, b;
	cin >> a >> b;
    cout << a + b << endl;
    return 0;
}

以及hello 妈的

#include <bits/stdc++.h>
using namespace std;
int main() {
	cout<<"Hello,妈的!" << endl;
    return 0;
}