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#include <iostream>


using namespace std;
/*
 *
 * Aja alla oleva komento ennen debuggausta, niin debuggeri toimii
 echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope

A PTRACE scope of "0" is the more permissive mode. A scope of "1" limits
PTRACE only to direct child processes (e.g. "gdb name-of-program" and
"strace -f name-of-program" work, but gdb's "attach" and "strace -fp $PID"
do not). The PTRACE scope is ignored when a user has CAP_SYS_PTRACE, so
"sudo strace -fp $PID" will work as before. For more details see:
https://wiki.ubuntu.com/SecurityTeam/Roadmap/KernelHardening#ptrace
*/
int main()
{
    int a=0;
    cin >> a;
    cout << "Hello World!" << endl;
    return 0;
}