Compilare: main.cpp: In function 'void solve()': main.cpp:83:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | while(idx1 < i1.size() and i1[idx1] != 't'){ | ~~~~~^~~~~~~~~~~ main.cpp:114:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 114 | while(idx2 < i2.size() and i2[idx2] != 't'){ | ~~~~~^~~~~~~~~~~ main.cpp:100:27: warning: 'x1' may be used uninitialized [-Wmaybe-uninitialized] 100 | removehash(hash1_2, i1[idx1], MOD1, 2, x1); | ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:78:14: note: 'x1' was declared here 78 | char x2, x1; | ^~ main.cpp:131:27: warning: 'x2' may be used uninitialized [-Wmaybe-uninitialized] 131 | removehash(hash1_10, i2[idx2], MOD1, 10, x2); | ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:78:10: note: 'x2' was declared here 78 | char x2, x1; | ^~