Compilare: user.cpp: In function ‘int query(int)’: user.cpp:23:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < g[poz].size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:32:15: warning: unused variable ‘x’ [-Wunused-variable] int n, k, x, poz, ans; ^ user.cpp:32:18: warning: unused variable ‘poz’ [-Wunused-variable] int n, k, x, poz, ans; ^ user.cpp:32:23: warning: unused variable ‘ans’ [-Wunused-variable] int n, k, x, poz, ans; ^ user.cpp:34:10: warning: unused variable ‘m’ [-Wunused-variable] suma m; ^ user.cpp:30:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("oite.in", "r", stdin); ^ user.cpp:31:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("oite.out", "w", stdout); ^ user.cpp:36:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &k); ^ user.cpp:38:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^