1111

A+B(6)

#include <bits/stdc++.h>

using namespace std;

int main()

{

int n;

int x;

while (cin >> n)

{

int cur_sum = 0;

while (n --)

{

cin >> x;

cur_sum += x;

}

cout << cur_sum << endl;

}

return 0;

}

倒序

#include<iostream>

using namespace std;

int main()

{

int a,b,c;

cin>>a>>b>>c;

cout<<c<<" "<<b<<" "<<a;

return 0;

}

牛妹数

using namespace std;

int main(){

int n;

cin>>n;

if(n%2==0 && n>50)

cout<<"yes";

else

cout<<"no";

return 0;

}

卡拉兹函数

#include<iostream>

using namespace std;

int main()

{

int n;

cin>>n;

if(n%2!=0)cout<<3*n+1<<endl;

else cout<<n/2<<endl;

}

比大小

#include <iostream>

using namespace std;

int main()

{

int a, b;

cin >> a >> b;

if (a > b)

cout << '>' << endl;

if (a < b)

cout << '<' << endl;

if (a == b)

cout << '=' << endl;

return 0;

}