Compilare: main.cpp: In function 'void bloc(int, int)': main.cpp:26:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int t=0;t<l[x].size();t++){ ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:91:27: warning: too many arguments for format [-Wformat-extra-args] fprintf(f,"\n",c); ^ main.cpp:92:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<comp.size();j++){ ~^~~~~~~~~~~~ main.cpp:74:16: warning: unused variable 'nrc' [-Wunused-variable] int i,x,y,nrc=0,j; ^~~ main.cpp:77:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&m); ^ main.cpp:79:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&x,&y); ^