結果
問題 | No.1315 渦巻洞穴 |
ユーザー |
|
提出日時 | 2020-12-12 12:23:27 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 3 ms / 2,000 ms |
コード長 | 2,666 bytes |
コンパイル時間 | 2,243 ms |
コンパイル使用メモリ | 199,144 KB |
最終ジャッジ日時 | 2025-01-16 22:54:59 |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 79 |
ソースコード
#include <bits/stdc++.h>using namespace std;#define rep(i, n) for(int i = 0; i < n; i++)#define rep2(i, x, n) for(int i = x; i <= n; i++)#define rep3(i, x, n) for(int i = x; i >= n; i--)#define each(e, v) for(auto &e: v)#define pb push_back#define eb emplace_back#define all(x) x.begin(), x.end()#define rall(x) x.rbegin(), x.rend()#define sz(x) (int)x.size()using ll = long long;using pii = pair<int, int>;using pil = pair<int, ll>;using pli = pair<ll, int>;using pll = pair<ll, ll>;const int MOD = 1000000007;//const int MOD = 998244353;const int inf = (1<<30)-1;const ll INF = (1LL<<60)-1;template<typename T> bool chmax(T &x, const T &y) {return (x < y)? (x = y, true) : false;};template<typename T> bool chmin(T &x, const T &y) {return (x > y)? (x = y, true) : false;};struct io_setup{io_setup(){ios_base::sync_with_stdio(false);cin.tie(NULL);cout << fixed << setprecision(15);}} io_setup;pii pos(int x){if(x == 1) {return pii(0, 0);}int r = ceil(sqrt(x)-0.000001);if(r%2 == 0) ++r;int k = x-(r-2)*(r-2)-1;int a = (r-1)/2, b = k%(r-1);if(k/(r-1) == 0){return pii(a, -a+1+b);}if(k/(r-1) == 1){return pii(a-1-b, a);}if(k/(r-1) == 2){return pii(-a, a-1-b);}if(k/(r-1) == 3){return pii(-a+1+b, -a);}return pii(0, 0);}char inv(char x){if(x == 'R') return 'L';if(x == 'L') return 'R';if(x == 'U') return 'D';if(x == 'D') return 'U';return '.';}string move(int sx, int sy, int tx, int ty){assert((abs(sx-tx)+abs(sy-ty))%2 == 0);string tmp, ret;if(sx < tx){rep(i, tx-sx) tmp += 'R';}else{rep(i, sx-tx) tmp += 'L';}if(sy < ty){rep(i, ty-sy) tmp += 'U';}else{rep(i, sy-ty) tmp += 'D';}rep(i, sz(tmp)/2){ret += tmp[2*i], ret += tmp[2*i+1];ret += inv(tmp[2*i+1]);ret += tmp[2*i+1];}return ret;}int main(){int S, T;cin >> S >> T;int sx, sy, tx, ty;tie(sx, sy) = pos(S), tie(tx, ty) = pos(T);//cout << sx << ' ' << sy << ' ' << tx << ' ' << ty << '\n';string ans;ans += "RLR";sx++;int a = abs(sx)+abs(sy), b = abs(tx)+abs(ty);a &= 1, b &= 1;if(a == b){ans += move(sx, sy, tx, ty);}else if(a == 0){ans += move(sx, sy, 0, 0);ans += "RLRUD";ans += move(1, 0, tx, ty);}else{ans += move(sx, sy, -1, 0);ans += "URD";ans += move(0, 0, tx, ty);}cout << 0 << '\n' << sz(ans) << '\n' << ans << '\n';}