Compilare: main.cpp: In function 'int main()': main.cpp:13:22: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister] 13 | for(register int i=1;i<=n;i++) | ^ main.cpp:14:26: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister] 14 | for(register int j=1;j<=m;j++) | ^ main.cpp:20:22: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister] 20 | for(register int i=1;i<=n;i++) | ^ main.cpp:24:26: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister] 24 | for(register int j=1;j<=m;j++) | ^ main.cpp:39:26: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister] 39 | for(register int j=m;j>=1;j--) | ^ main.cpp:52:26: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister] 52 | for(register int j=1;j<=m;j++) | ^ main.cpp:55:26: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister] 55 | for(register int j=0;j<v.size();j++) | ^ main.cpp:55:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | for(register int j=0;j<v.size();j++) | ~^~~~~~~~~