Compilare: main.cpp: In constructor 'BipartiteMatching::BipartiteMatching(std::vector<std::vector<int> >&)': main.cpp:70:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<graph.size(); ++i) ~^~~~~~~~~~~~~ main.cpp:72:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<graph.size(); ++i) ~^~~~~~~~~~~~~ main.cpp: In function 'void solveInput()': main.cpp:119:13: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for (k=0; k<K; ++k) ^~~ main.cpp:122:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' if (k < K+5) ^~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:13:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^