Compilare: main.cpp: In function 'void prefix()': main.cpp:9:19: warning: unused variable 'nr' [-Wunused-variable] 9 | { long long i,k=0,nr=0; | ^~ main.cpp: In function 'int potrivire(std::string)': main.cpp:31:5: warning: unused variable 'i' [-Wunused-variable] 31 | int i,k=0,m=b.size(),n=A.size(),poz=-1; | ^ main.cpp: In function 'int main()': main.cpp:59:6: warning: this 'else' clause does not guard... [-Wmisleading-indentation] 59 | else | ^~~~ main.cpp:66:7: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'else' 66 | for(j=0;j<a.size();j++) | ^~~ main.cpp:66:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | for(j=0;j<a.size();j++) | ~^~~~~~~~~