#include <iostream>

int main()
{
    std::cout<<"请输入N个整数，按Ctrl+Z,然后按Enter结束"<<std::endl;

    int val = 0 , sum = 0 ;

    while(std::cin>>val)
        sum += val ;
    std::cout<<"你输入的数之和是："<<sum<<std::endl;

    return 0;
}