Compilare: main.cpp: In function 'void solve()': main.cpp:42:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<dp[i].size(); j++) ~^~~~~~~~~~~~~ main.cpp: In function 'void read()': main.cpp:16:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&n,&m,&q); ^ main.cpp:19:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&x,&y,&c); ^ main.cpp: In function 'void solve()': main.cpp:35:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&node,&taxa); ^