A.
#include <iostream>
int main(){
int n, bits = 0;
std::cin >> n;
for(; n; n >>= 1, ++bits);
std::cout << bits;
return 0;
}
B.
#include <iostream>
#include <stack>
void inserare(std::stack<int>& in, const int n){
for(int i = n; i; --i){
in.push(0);
std::cin >> in.top();
}
}
int main(){
std::stack<int> stiva[2];
int n;
std::cout << "Introduceti marimea stivelor: ";
std::cin >> n;
for(int i = 0; i < 2; ++i){
std::cout << "Introduceti elemente a stivei " << i+1 << ": ";
inserare(stiva[i], n);
}
for(int i = n; i; --i){
if(stiva[0].top() != stiva[1].top()){
std::cout << "Nu sunt egale\n";
return 0;
}
stiva[0].pop();
stiva[1].pop();
}
std::cout << "Sunt egale\n";
return 0;
}