Compilare: main.cpp: In function 'void solve(int)': main.cpp:14:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( Ind[grd] == L[grd].size() ) ~~~~~~~~~^~~~~~~~~~~~~~~~ main.cpp:17:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while( Ind[grd] < L[grd].size() ){ ~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp:28:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < edge[nod].size(); i++ ){ ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:58:41: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread( buffer, DIM1, 1, fin ), p = 0; ^ main.cpp: In function 'void citeste(int&)': main.cpp:47:49: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread( buffer, DIM1, 1, fin ), p = 0; ^ main.cpp:53:49: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread( buffer, DIM1, 1, fin ), p = 0; ^