>>553
#include <iostream>
#include <vector>
int main(void)
{
std::vector<int> v;
for( int i = 0; i < 5; ++i )
{
int n;
std::cin >> n;
v.push_back( n );
}

int sum = 0;
for( std::vector<int>::iterator it = v.begin(); it != v.end(); ++it )
{
sum += *it;
}
std::cout << sum << std::endl;
return 0;
}