Robotti

input/code.cpp: In function 'int main()':
input/code.cpp:23:9: warning: unused variable 'nx' [-Wunused-variable]
   23 |     int nx = 0;
      |         ^~
input/code.cpp:24:9: warning: unused variable 'ny' [-Wunused-variable]
   24 |     int ny = 0;
      |         ^~

#include <bits/stdc++.h>
#include <algorithm>
#include <cmath>
#include <vector>
#include <string>

using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    int l=0;
    cin >> n;
    int x=0,y=0,dx=0,dy=1;
    vector<string> v;
    for (int i = 0; i < n; i++)
    {
        string s;
        cin >> s;
        v.push_back(s);
    }
    int nx = 0;
    int ny = 0;
    while(x >= 0 && x < n && y >= 0 && y < n) { 

        string s = v[y];
        if(v[y][x] == '/') {
            if (dx == 1) {
                dy = -1;
                dx = 0;
            }else if (dx == -1){
                dy = 1;
                dx = 0;
            }else if (dy == -1){
                dy = 0;
                dx = 1;
            }else if (dy == 1){
                dy = 0;
                dx = -1;
            }
        }
        if(v[y][x] == '\\') {
            if (dx == 1) {
                dy = 1;
                dx = 0;
            }else if (dx == -1){
                dy = -1;
                dx = 0;
            }else if (dy == -1){
                dy = 0;
                dx = -1;
            }else if (dy == 1){
                dy = 0;
                dx = 1;
            }
        }
        l++;
        v[y][x] = (v[y][x] == '/') ? '\\' : (v[y][x] == '\\') ? '/' : '.';

        x +=dx;
        y +=dy;

    }


    cout << l;
    

    return 0;
}

Test 1 (public)

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED