include <iostream>

using namespace std;

define ll long long

int main() { double n1,n2,n3; while(cin>>n1>>n2>>n3) {cout.precision(4); cout<<fixed<<n1+n2+n3<<endl;} }

include <iostream>

using namespace std;

define ll long long

int main() { double n1,n2,n3; while(cin>>n1>>n2>>n3) {cout.precision(4); cout<<fixed<<n1+n2+n3<<endl;} }

include <bits/stdc++.h>

using namespace std; int main () { double r = 0, i, a, b, c, n, son = 0, cavab = 1;

while (cin >> a >> b >> c) {

i = a + b + c;

cout.precision (4); cout << fixed << i << endl;

}

}

include <bits/stdc++.h>

using namespace std; int main () { double r = 0, i, a, b, c, n, son = 0, cavab = 1;

while (cin >> a >> b >> c) {

i = a + b + c;

cout.precision (4); cout << fixed << i << endl;

}

}