Compilare: main.cpp:1:0: warning: ignoring #pragma gcc optimize [-Wunknown-pragmas] #pragma gcc optimize ("Ofast") main.cpp: In function 'int main()': main.cpp:17:7: warning: unused variable 's' [-Wunused-variable] int s = 0, p = 0, cate = LILBUCK; ^ main.cpp:12:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("xp.in", "r", stdin); ^ main.cpp:13:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("xp.out", "w", stdout); ^ main.cpp:16:43: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d", &n, &a, &b, &p1, &q); ^