Compilare: main.cpp: In function 'll DJ()': main.cpp:40:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:65:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (ll j=0; j<T[i].size()-1; j++) ~^~~~~~~~~~~~~~ main.cpp:91:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (st<T[x].size() && T[x][st]<=t) ~~^~~~~~~~~~~~ main.cpp:48:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("avione.in", "r", stdin); ^ main.cpp:49:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("avione.out", "w", stdout); ^