Submission #1305724

#	Time	Username	Problem	Language	Result	Execution time	Memory
1305724		guardianec	Jetpack (COCI16_jetpack)	C++20	80 / 80	42 ms	8368 KiB

jetpack

#include <bits/stdc++.h>
#define ll long long
using namespace std;

ll n;
vector<vector<char>> a;
vector<ll> res;

ll dfs(ll i, ll j){
    if (a[i][j]=='X') return 0;
    if (j==n-1) return 1;
    a[i][j] = 'X';
    if (dfs(min(9LL, i+1), j+1)) return 1;
    if (dfs(max(0LL, i-1), j+1)) {
        res.push_back(j);
        return 1;
    }
    return 0;
}
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    cin >> n;
    a.assign(10, vector<char>(n+1));
    for (int i=0; i<10; i++){
        for (int j=0; j<n; j++){
            cin >> a[i][j];
        }
    }

    dfs(9,0);
    reverse(res.begin(), res.end());
    cout << res.size() << endl;
    for (auto i : res) cout << i << " " << 1 << endl;
}

• Subtask 1: 80 / 80