Compilare: user.cpp: In function ‘int main()’: user.cpp:88:15: warning: unused variable ‘s’ [-Wunused-variable] int i, j, s, t, d, k, ma, ok, c11, c12; ^ user.cpp:88:24: warning: unused variable ‘k’ [-Wunused-variable] int i, j, s, t, d, k, ma, ok, c11, c12; ^ user.cpp:85:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("vila.in","r",stdin); ^ user.cpp:86:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("vila.out","w",stdout); ^ user.cpp:92:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:94:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",q); ^