📅  最后修改于: 2022-03-11 14:44:52.368000             🧑  作者: Mango
#include
#include
using namespace std;
int main()
{
int T1, T2, T3, T4;
cin >> T1 >> T2 >> T3 >> T4;
cout << (T1 + T2 + T3 + T4) - 3 << endl;
return 0;
}