Compilare: user.cpp: In function ‘int main()’: user.cpp:62:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(i % d == 0) ^ user.cpp:68:71: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long unsigned int’ [-Wformat=] for(int i = 1; i <= n; ++i) printf("%d\n", q[v[i].b] - q[v[i].a-1]); ^ user.cpp:46:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sumdiv2.in", "r", stdin); ^ user.cpp:47:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sumdiv2.out", "w", stdout); ^ user.cpp:49:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:52:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &v[i].a, &v[i].b); ^