Compilare: main.cpp: In function 'int main()': main.cpp:40:46: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type 'll {aka long int}' [-Wformat=] printf ("%lld\n", solve (b) - solve (a - 1)); ^ main.cpp:34:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("divk.in", "r", stdin); ^ main.cpp:35:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("divk.out", "w", stdout); ^ main.cpp:37:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d%d%d", &n, &k, &a, &b); ^ main.cpp:39:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &v[i]); ^