CSES - Datatähti 2026 loppu

Submission details
Task:	Robotti
Sender:	alli
Submission time:	2026-01-17 13:14:48 +0200
Language:	C++ (C++20)
Status:	READY
Result:	0

Feedback
group	verdict	score
#1	WRONG ANSWER	0

Test results
test	verdict	time
#1	WRONG ANSWER	0.00 s	details
#2	WRONG ANSWER	0.00 s	details
#3	WRONG ANSWER	0.00 s	details
#4	WRONG ANSWER	0.00 s	details
#5	WRONG ANSWER	0.01 s	details
#6	WRONG ANSWER	0.29 s	details

Code

#include<bits/stdc++.h>

typedef long long ll;
using namespace std;

char c[21][21];
int n, k = 0;
int d = -2;

void haku(int x, int y){
    if (x == n && y == n+1) return;
    cout << x << " " << y << " " << d << "\n";
    k++;
    if (c[y][x] == '\\'){
        c[y][x] = '/';
        if (d == -2){
            d = 1;
            haku(x+1,y);
        }
        else if (d == 2){
            d = -1;
            haku(x-1,y);
        }
        else if (d == 1){
            d = -2;
            haku(x,y+1);
        }
        else if (d == -1){
            d = 2;
            haku(x,y-1);
        }
    }
    else if (c[y][x] == '/'){
        c[y][x] = '\\';
        if (d == -2){
            d = -1;
            haku(x-1,y);
        }
        else if (d == 2){
            d = 1;
            haku(x+1,y);
        }
        else if (d == 1){
            d = 2;
            haku(x,y-1);
        }
        else if (d == -1){
            d = -2;
            haku(x,y+1);
        }
    }
    else if (c[y][x] == '.'){
        if (d == -2)haku(x,y+1);
        else if (d == 2) haku(x,y-1);
        else if (d == 1) haku(x+1,y);
        else if (d == -1) haku(x-1,y);
    }
}

int main(){
    cin >> n;
    for (int i = 1; i <= n; i++){
        for (int j = 1; j <= n; j++){
            cin >> c[i][j];
        }
    }
    haku(1,1);
    cout << k << "\n";
}

Test details

Test 1 (public)

Verdict: WRONG ANSWER

input
`3 ./\ \./ \/.` view save

correct output
`13` view save

user output
`1 1 -2 1 2 -2 2 2 1 3 2 1 3 1 2 ...` view save