Compilare: user.cpp: In function ‘int main()’: user.cpp:83:26: warning: capture of variable ‘g’ with non-automatic storage duration [enabled by default] sort(idx, idx + L, [&g] (const int x, const int y) { ^ user.cpp:22:6: note: ‘graf g [1048576]’ declared here graf g[L_MAX]; ^ user.cpp:44:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(IN_FILE, "r", stdin); ^ user.cpp:45:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(OUT_FILE, "w", stdout); ^ user.cpp:47:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int N; scanf("%d", &N); ^ user.cpp:55:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &g[p].h); ^