Compilare: main.cpp: In function 'int main()': main.cpp:28:28: warning: unused variable 'ok' [-Wunused-variable] int p = x%MOD, ok = 0; ^~ main.cpp:14:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d", &t); ^ main.cpp:16:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d", &op,&x); ^