Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:38:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<=graf[nod].size()-1; ++i) ~^~~~~~~~~~~~~~~~~~~~ main.cpp:43:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(drum[lant[graf[nod][i]]].size() > maxim) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ main.cpp:64:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<=graf[nod].size()-1; ++i) ~^~~~~~~~~~~~~~~~~~~~ main.cpp:22:22: warning: unused variable 't' [-Wunused-variable] int maxim,imax,i,t; ^ main.cpp: In function 'int main()': main.cpp:172:21: warning: unused variable 'a' [-Wunused-variable] int a=(-1)*( nivel[tata[lant[x]]] - nivel[x] + 1); ^ main.cpp:173:21: warning: unused variable 'b' [-Wunused-variable] int b=drum[lant[x]].size()-1; ^ main.cpp:123:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n,&m); ^ main.cpp:125:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &a[i]); ^ main.cpp:128:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &x,&y); ^ main.cpp:157:40: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &t,&x,&y); ^