#include <iostream>
using namespace std;
void foo(const char* path) {
char* p = const_cast<char*>(path);
char tmp = p[1];
p[1] = '\0';
std::cout << p << std::endl;
p[1] = tmp;
}
int main() {
char obichniy[111];
std::cin >> obichniy;
foo(obichniy);
const char* pethu = "pethu";
foo(pethu);
return 0;
}
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