Compilare: main.cpp: In function 'void solve_testcase()': main.cpp:265:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 265 | for(int i = 1; i < a.size(); ++i) | ~~^~~~~~~~~~ main.cpp:268:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 268 | while(i + z[i] < a.size() && a[z[i]] == a[i + z[i]]) | ~~~~~~~~~^~~~~~~~~~ main.cpp:279:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 279 | for(int i = n + 1; i < a.size(); ++i) | ~~^~~~~~~~~~ main.cpp:260:23: warning: unused variable 'm' [-Wunused-variable] 260 | int n = a.size(), m = b.size(); | ^