Compilare: main.cpp: In function 'int main()': main.cpp:20:20: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=] printf ("%d\n", r); ^ main.cpp:5:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("drum3.in", "r", stdin); ^ main.cpp:6:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("drum3.out", "w", stdout); ^ main.cpp:11:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &n, &k); ^