Compilare: main.cpp: In function 'void solve()': main.cpp:59:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int currentNodeIndex = 0; currentNodeIndex < d[k].size(); currentNodeIndex ++) { ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp: In function 'void citeste(int&)': main.cpp:29:45: 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,DIM,stdin),poz=0; ^ main.cpp:34:45: 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,DIM,stdin),poz=0; ^ main.cpp: In function 'int main()': main.cpp:78:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("pscnv.in", "r", stdin); ^ main.cpp:79:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("pscnv.out", "w", stdout); ^