Compilare: main.cpp: In function 'void solve()': main.cpp:38:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int l=0;l<soll[r].size();l++) ~^~~~~~~~~~~~~~~ main.cpp:12:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&r,&g,&b); ^ main.cpp: In function 'int main()': main.cpp:56:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&t); ^