Compilare: user.cpp: In function ‘int main()’: user.cpp:20:45: warning: format ‘%s’ expects argument of type ‘char*’, but argument 4 has type ‘char (*)[6]’ [-Wformat=] scanf ("%d%d\n%s\n",&t,&n, &it[0].second); ^ user.cpp:22:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] cost[it[0].second[i]] = i; ^ user.cpp:27:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] k += cost[it[i].second[j]] * p, p *= 12; ^ user.cpp:18:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("zimeria.in","r",stdin); ^ user.cpp:19:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("zimeria.out","w",stdout); ^ user.cpp:20:46: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d\n%s\n",&t,&n, &it[0].second); ^ user.cpp:24:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%s\n", it[i].second); ^ user.cpp:22:27: warning: iteration 6u invokes undefined behavior [-Waggressive-loop-optimizations] cost[it[0].second[i]] = i; ^ user.cpp:4:19: note: containing loop #define FOR(i, n) for (int i = 0; i < (int)(n); i++) ^ user.cpp:21:5: note: in expansion of macro ‘FOR’ FOR(i,13) ^