Submission #1005600

#	Time	Username	Problem	Language	Result	Execution time	Memory
1005600		otarius	Costinland (info1cup19_costinland)	C++17	100 / 100	1 ms	460 KiB

costinland

#include <iostream>
#include <algorithm>
#include <vector>
#include <set>
#include <cstring>
#include <queue>
#include <map>
#include <cmath>
#include <iomanip>
using namespace std;
 
#define ff first
#define sc second
#define pb push_back
#define ll long long
#define pll pair<ll, ll>
#define pii pair <int, int>
#define ull unsigned long long
 
// #define int long long
// #define int unsigned long long
 
const ll inf = 1e9 + 7;
const ll weirdMod = 998244353;
 
ll n;
char arr[50][50];
vector<vector<pii>> add = {
    {}, {{2, 0}}, {{2, 0}, {0, 2}}, {{2, 1}}, {{2, 0}, {2, 1}}, {{2, 0}, {2, 1}, {0, 2}}
};
int dfs(int x, int y, int dir) {
    if (x > 4 || y > 4) return 1;
    if (arr[x][y] == 'X') return dfs(x + 1, y, 0) + dfs(x, y + 1, 1);
    if (dir == 0) return dfs(x + 1, y, 0);
    return dfs(x, y + 1, 1);
}
void go20() {
    for (int i = 0; i < (1 << 16); i++) {
        for (int j = 1; j <= 16; j++) {
            if ((i >> (j - 1)) % 2 == 1) {
                if (j % 4 == 0) arr[j / 4][4] = 'X';
                else arr[j / 4 + 1][j % 4] = 'X';
            } else {
                if (j % 4 == 0) arr[j / 4][4] = '.';
                else arr[j / 4 + 1][j % 4] = '.';
            }
        } if (arr[1][1] != 'X') continue;
        if (dfs(1, 1, 0) == n) {
            cout << "5 5\n";
            for (int j = 1; j <= 5; j++) {
                for (int k = 1; k <= 5; k++) {
                    if (j == 5 && k == 5) cout << '.';
                    else if (j == 5) cout << 'r';
                    else if (k == 5) cout << 'd';
                    else cout << arr[j][k];
                } cout << '\n';
            } return;
        }
    }
}
vector<int> get(ll x) {
    vector<int> ans;
    while (x) {
        ans.pb(x % 6);
        x /= 6;
    } return ans;
}
void go80() {
    for (int i = 1; i <= 49; i++)
        for (int j = 1; j <= 49; j++) arr[i][j] = '.';
    for (int i = 1; i <= 48; i++) arr[i][49] = 'd';
    for (int j = 1; j <= 48; j++) arr[49][j] = 'r';
    vector<int> v = get(n);
    for (int i = 0; i < v.size() - 1; i++) {
        int pos = 2 * i + 1;
        arr[pos][pos] = 'X';
        arr[pos][pos + 1] = 'X';
        arr[pos + 1][pos] = 'X';
        arr[pos + 1][pos + 1] = 'X';
        arr[pos + 2][pos] = 'r';
        arr[pos][pos + 2] = 'd';
        arr[pos + 2][pos + 1] = 'r';
        arr[pos + 1][pos + 2] = 'd';
        for (pii j : add[v[i]])
            arr[pos + j.ff][pos + j.sc] = 'X';
    } int pos = 2 * (int)(v.size() - 1) + 1, vl = v.back();
    if (vl == 2) {
        arr[pos][pos] = 'X';
    } if (vl == 3) {
        arr[pos][pos] = 'X';
        arr[pos + 1][pos] = 'X';
    } if (vl == 4) {
        arr[pos][pos] = 'X';
        arr[pos + 1][pos] = 'X';
        arr[pos][pos + 1] = 'X';
    } if (vl == 5) {
        arr[pos][pos] = 'X';
        arr[pos + 1][pos] = 'X';
        arr[pos][pos + 1] = 'X';
        arr[pos][pos + 2] = 'X';
    } cout << "49 49\n";
    for (int i = 1; i <= 49; i++) {
        for (int j = 1; j <= 49; j++) {
            cout << arr[i][j];
        } cout << '\n';
    }
}
void solve() {
    cin >> n;
    if (n <= 19) go20();
    else go80();
}
int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    
    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
        cout << '\n';
    }
    return 0;
}

Compilation message (stderr)

costinland.cpp: In function 'void go80()':
costinland.cpp:74:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |     for (int i = 0; i < v.size() - 1; i++) {
      |                     ~~^~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 80 / 80