Compilare: main.cpp: In function 'std::vector<int> Inm(const std::vector<int>&, const std::vector<int>&)': main.cpp:21:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < A.size(); ++i ) ~~^~~~~~~~~~ main.cpp:22:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = 1; j < B.size(); ++j ) ~~^~~~~~~~~~ main.cpp:27:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 1; i < C.size(); ++i ) ~~^~~~~~~~~~ main.cpp: In function 'std::vector<int> Sum(const std::vector<int>&, const std::vector<int>&)': main.cpp:73:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( A.size() > i && B.size() > i ) ~~~~~~~~~^~~ main.cpp:73:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( A.size() > i && B.size() > i ) ~~~~~~~~~^~~ main.cpp:76:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( A.size() <= i ) ~~~~~~~~~^~~~ main.cpp:79:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( B.size() <= i ) ~~~~~~~~~^~~~ main.cpp: In function 'void Read()': main.cpp:139:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for( int i = C.size() - 1; i > 0; --i )fout << C[i];fout << '\n'; ^~~ main.cpp:139:57: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for( int i = C.size() - 1; i > 0; --i )fout << C[i];fout << '\n'; ^~~~