Compilare: main.cpp: In function 'int main()': main.cpp:7:24: warning: variable 'cont' set but not used [-Wunused-but-set-variable] int n, j, dr, stg, cont=0; ^~~~ main.cpp:12:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%lld", &n, &can); ^