Compilare: user.cpp: In function ‘int ap(int, int)’: user.cpp:20:7: warning: unused variable ‘nr’ [-Wunused-variable] int nr = 0, ans = 0, p10 = 1, suf = n, pref = 0; ^ user.cpp: In function ‘std::pair<long long unsigned int, long long unsigned int> getb(int*)’: user.cpp:45:7: warning: unused variable ‘p1’ [-Wunused-variable] int p1 = 1, p2 = 1; ^ user.cpp:45:15: warning: unused variable ‘p2’ [-Wunused-variable] int p1 = 1, p2 = 1; ^ user.cpp: In function ‘int main()’: user.cpp:120:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (egal(aux, fr) && nr > nb[i]) ^ user.cpp:134:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (egal(aux, fr) && nr > nb[i]) ^ user.cpp:140:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (m[aa] != 0 && nr > nb[m[aa]] + nb[i]) ^ user.cpp:144:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ans == -1) ^ user.cpp:90:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("colectie.in", "r", stdin); ^ user.cpp:91:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("colectie.out", "w", stdout); ^ user.cpp:94:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &k); ^ user.cpp:102:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^