Compilare: main.cpp:4:24: warning: extra tokens at end of #include directive #include<unordered_map>> ^ main.cpp: In function 'int main()': main.cpp:12:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ main.cpp:15:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&a); ^