Compilare: main.cpp: In function 'int main()': main.cpp:77:15: warning: variable 'finish' set but not used [-Wunused-but-set-variable] int finish = 0; ^~~~~~ main.cpp:59:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d ", &perm[i]); ^ main.cpp:62:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%s\n", A+1); ^ main.cpp:65:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d\n", &K); ^