2018南京Gym - 101981K - Kangaroo Puzzle

https://codeforces.com/gym/101981/attachments

分析：地图只有400个点，直接随机跑一个长度50000的字符串就可以了。

#include "bits/stdc++.h"

using namespace std;
const long long mod = 1e9 + 7;

char mp[24][24];

int main() {
    srand(time(0));
    int n, m;
    cin >> n >> m;
    for (int i = 0; i < n; ++i) {
        scanf("%s", mp[i]);
    }
    string ans;
    for (int i = 0; i < 50000; ++i) {
        int temp = rand() % 4;
        if (temp == 0) {
            ans += 'U';
        } else if (temp == 1) {
            ans += 'L';
        } else if (temp == 2) {
            ans += 'R';
        } else if (temp == 3) {
            ans += 'D';
        }
    }
    cout << ans << endl;
}