Compilare: user.cpp: In function ‘int find_trie()’: user.cpp:135:97: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(;!(node->ok && (node->best==100 || val[node->ok]>=val[node->p]));node=node->f[node->best]); ^ user.cpp: In function ‘void solve()’: user.cpp:148:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c ",&ch); ^ user.cpp:151:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s %d\n",a+1,&R); ^ user.cpp:156:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n",a+1); ^ user.cpp: In function ‘int main()’: user.cpp:177:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fbsearch.in","r",stdin); ^ user.cpp:178:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fbsearch.out","w",stdout); ^ user.cpp:182:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&T); ^ user.cpp:185:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n",&n,&m); ^ user.cpp:190:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n",s[i]+1); ^