Compilare: main.cpp: In function 'void DF(int)': main.cpp:18:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<g[i].size();j++){ ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:43:31: warning: comparison of constant '1' with boolean expression is always false [-Wbool-compare] if((nr!=0 and nr!=2)||(nrc>1)) ~~~^~ main.cpp:59:40: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(arc[i].inc == incep and arc[i].sf == sfarsit or arc[i].sf == incep and arc[i].inc == sfarsit) ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:29:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ main.cpp:32:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &x,&y); ^