lozinke.cpp: In function 'void solve()':
lozinke.cpp:18:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
18 | #define ent(arr) for(int i=0;i<arr.size();i++)cin>>arr[i];
| ~^~~~~~~~~~~
lozinke.cpp:52:3: note: in expansion of macro 'ent'
52 | ent(arr);
| ^~~
lozinke.cpp:62:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
62 | for(int k=0; k<arr[i].sz; k++)
| ^
lozinke.cpp:65:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
65 | for(int e=k; e<arr[i].sz; e++)
| ^
lozinke.cpp:60:10: warning: unused variable 'valid' [-Wunused-variable]
60 | bool valid=true;
| ^~~~~
lozinke.cpp: In function 'void bla()':
lozinke.cpp:26:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
26 | freopen("input.txt","r",stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
lozinke.cpp:27:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
27 | freopen("notsus.txt","w",stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~