Compilare: main.cpp: In function 'int main()': main.cpp:117:11: warning: unused variable 'm' [-Wunused-variable] int n,m,i,j; ^ main.cpp:117:15: warning: unused variable 'j' [-Wunused-variable] int n,m,i,j; ^ main.cpp: In function 'treap* Del(treap*, int)': main.cpp:97:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'int kth(treap*, int)': main.cpp:111:1: warning: control reaches end of non-void function [-Wreturn-type] } ^