#include
#include
using namespace std;
int main()
{
int a,b,c,sum;
double avg;
while(cin>>a>>b>>c)
{
avg=(a+b+c)/3.00;
sum=a+b+c;
cout << sum<
}return 0;
}

#include
#include
using namespace std;
int main()
{
int a,b,c,sum;
double avg;
while(cin>>a>>b>>c)
{
avg=(a+b+c)/3.00;
sum=a+b+c;
cout << sum<
}return 0;
}