Compilare: main.cpp: In function 'int main()': main.cpp:13:18: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare] 13 | for(int i=1;i<=n;i++) | ~^~~ main.cpp:16:23: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare] 16 | for(int i = 2; i <= n; ++i){ | ~~^~~~ main.cpp:12:42: warning: unused variable 'st' [-Wunused-variable] 12 | unsigned long long a[n+1],l=1,ml=1,i,st=1,mst=1,dr=1,mdr=1; | ^~ main.cpp:12:53: warning: unused variable 'dr' [-Wunused-variable] 12 | unsigned long long a[n+1],l=1,ml=1,i,st=1,mst=1,dr=1,mdr=1; | ^~ main.cpp:12:58: warning: variable 'mdr' set but not used [-Wunused-but-set-variable] 12 | unsigned long long a[n+1],l=1,ml=1,i,st=1,mst=1,dr=1,mdr=1; | ^~~