Anton Bingung Dimana

// Tested by zydhanlinnar11 on May 25, 2022
#include <iostream>
#include <cassert>
#include <vector>
#include <string>
using namespace std;
typedef vector<string> vs;

inline string formatPath(vs &arr) {
    string path = arr.front();
    for(int i=1; i<arr.size(); i++) path += "/" + arr[i];
    return path;
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    #ifdef ZYD_WSL
        freopen("/home/zydhanlinnar11/prakfinal-qa/in", "r", stdin);
    #endif
    int q, s;
    string cmd;
    vs arr = {"home", "anton"};
    getline(cin, cmd);
    q = stoi(cmd);
    assert(1 <= q && q <= 30);
    while(q--) {
        getline(cin, cmd);
        if(cmd.find("whereami") != string::npos)
            cout<<(arr.empty() ? "i am nowhere" : formatPath(arr))<<"\n";
        else if (cmd.find("goto") != string::npos) {
            string x = cmd.substr(5);
            for(char &i: x) assert(i != ' ');
            arr.push_back(x);
        }
        else if(cmd.find("goback") == string::npos)cout<<"Query not found\n";
        else if(!arr.empty()) arr.pop_back();
        else  cout<<"cannot go back\n";
    }
    return 0;
}