結果
問題 | No.1405 ジグザグロボット |
ユーザー | SSRS |
提出日時 | 2021-02-18 23:12:32 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,121 ms / 3,153 ms |
コード長 | 5,332 bytes |
コンパイル時間 | 3,547 ms |
コンパイル使用メモリ | 217,404 KB |
実行使用メモリ | 36,224 KB |
最終ジャッジ日時 | 2024-09-16 23:43:17 |
合計ジャッジ時間 | 12,018 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,812 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 5 ms
6,940 KB |
testcase_04 | AC | 6 ms
6,944 KB |
testcase_05 | AC | 5 ms
6,940 KB |
testcase_06 | AC | 5 ms
6,944 KB |
testcase_07 | AC | 5 ms
6,940 KB |
testcase_08 | AC | 42 ms
6,944 KB |
testcase_09 | AC | 109 ms
6,944 KB |
testcase_10 | AC | 208 ms
6,944 KB |
testcase_11 | AC | 100 ms
6,944 KB |
testcase_12 | AC | 106 ms
6,944 KB |
testcase_13 | AC | 119 ms
6,940 KB |
testcase_14 | AC | 106 ms
6,944 KB |
testcase_15 | AC | 109 ms
6,940 KB |
testcase_16 | AC | 22 ms
6,940 KB |
testcase_17 | AC | 21 ms
6,940 KB |
testcase_18 | AC | 24 ms
6,940 KB |
testcase_19 | AC | 26 ms
6,940 KB |
testcase_20 | AC | 22 ms
6,944 KB |
testcase_21 | AC | 28 ms
6,940 KB |
testcase_22 | AC | 24 ms
6,940 KB |
testcase_23 | AC | 24 ms
6,944 KB |
testcase_24 | AC | 26 ms
6,940 KB |
testcase_25 | AC | 8 ms
6,944 KB |
testcase_26 | AC | 20 ms
6,944 KB |
testcase_27 | AC | 37 ms
7,040 KB |
testcase_28 | AC | 36 ms
7,040 KB |
testcase_29 | AC | 27 ms
6,940 KB |
testcase_30 | AC | 43 ms
7,424 KB |
testcase_31 | AC | 572 ms
27,776 KB |
testcase_32 | AC | 557 ms
27,520 KB |
testcase_33 | AC | 72 ms
9,856 KB |
testcase_34 | AC | 4 ms
6,944 KB |
testcase_35 | AC | 1,121 ms
36,224 KB |
testcase_36 | AC | 2 ms
6,940 KB |
testcase_37 | AC | 6 ms
6,940 KB |
ソースコード
#pragma GCC target("avx2") #pragma GCC optimize("unroll-loops") #pragma GCC optimize("O3") #include <bits/stdc++.h> using namespace std; const int INF = 1000000; vector<int> dy = {1, 0, 0}; vector<int> dx = {0, 1, -1}; int main(){ int N, X, Y; cin >> N >> X >> Y; string S; cin >> S; vector<string> T(1); for (int i = 0; i < N; i++){ if (S[i] == 'S'){ T.push_back(""); } else { T.back() += S[i]; } } int K = T.size(); if (Y >= K){ cout << -1 << endl; } else { vector<vector<int>> a(K + 1, vector<int>(K + 1, 0)); for (int i = 0; i < K; i++){ int c = 0; for (int j = i; j < K; j++){ int sz = T[j].size(); for (int k = 0; k < sz; k++){ if (T[j][k] == 'L'){ c--; c = max(c, 0); } else { c++; } } a[i][j + 1] = c; } } vector<vector<int>> dp(Y + 2, vector<int>(K + 1, -INF)); dp[0][0] = 0; for (int i = 0; i <= Y; i++){ for (int j = 0; j < K; j++){ for (int k = j + 1; k <= K; k++){ dp[i + 1][k] = max(dp[i + 1][k], dp[i][j] + a[j][k]); } } } if (dp[Y + 1][K] < X){ cout << -1 << endl; } else { vector<int> P(Y + 2); P[Y + 1] = K; for (int i = Y; i >= 0; i--){ for (int j = 0; j < P[i + 1]; j++){ if (dp[i + 1][P[i + 1]] == dp[i][j] + a[j][P[i + 1]]){ P[i] = j; break; } } } vector<int> L(Y + 1); for (int i = 0; i <= Y; i++){ L[i] = dp[i][P[i]]; } vector<string> T2(Y + 1); for (int i = 0; i <= Y; i++){ for (int j = P[i]; j < P[i + 1]; j++){ T2[i] += T[j]; T2[i] += 'S'; } } T2[Y].pop_back(); vector<int> R = L; for (int i = 0; i <= Y; i++){ int x = L[i]; int l = T2[i].size(); for (int j = 0; j < l; j++){ if (T2[i][j] == 'L'){ x--; } if (T2[i][j] == 'R'){ x++; } x = max(x, L[i]); R[i] = max(R[i], x); } } set<pair<int, int>> st; for (int i = 0; i <= Y; i++){ for (int j = L[i]; j <= R[i]; j++){ st.insert(make_pair(i, j)); } } vector<vector<int>> ans(Y + 2); for (auto P : st){ int y = P.first; int x = P.second; for (int i = 0; i < 3; i++){ int y2 = y + dy[i]; int x2 = x + dx[i]; if (st.count(make_pair(y2, x2)) == 0){ ans[y2].push_back(x2); } } } for (int i = 0; i < Y + 2; i++){ sort(ans[i].begin(), ans[i].end()); ans[i].erase(unique(ans[i].begin(), ans[i].end()), ans[i].end()); } while (true){ set<pair<int, int>> st2; for (int i = 0; i < Y + 2; i++){ int cnt = ans[i].size(); for (int j = 0; j < cnt; j++){ st2.insert(make_pair(i, ans[i][j])); } } int cx = 0, cy = 0; vector<int> up(Y + 1); vector<int> id(Y); for (int i = 0; i < N; i++){ int x2 = cx, y2 = cy; if (S[i] == 'L'){ x2--; } if (S[i] == 'R'){ x2++; } if (S[i] == 'S'){ y2++; } if (st2.count(make_pair(y2, x2)) == 1){ x2 = cx; y2 = cy; } if (y2 != cy){ id[cy] = i; up[cy] = x2; } cx = x2; cy = y2; } up[Y] = cx; if (cx == X){ break; } vector<int> d(Y + 1); d[0] = up[0]; for (int j = 1; j <= Y; j++){ d[j] = up[j] - up[j - 1]; } int p = 0; while (d[p] == 0){ p++; } ans[p].back()--; set<pair<int, int>> st3; for (int i = 0; i < Y + 2; i++){ int cnt = ans[i].size(); for (int j = 0; j < cnt; j++){ st3.insert(make_pair(i, ans[i][j])); } } vector<int> px(N + 1), py(N + 1); px[0] = 0; py[0] = 0; for (int i = 0; i < N; i++){ px[i + 1] = px[i]; py[i + 1] = py[i]; if (S[i] == 'L'){ px[i + 1]--; } if (S[i] == 'R'){ px[i + 1]++; } if (S[i] == 'S'){ py[i + 1]++; } if (st3.count(make_pair(py[i + 1], px[i + 1])) == 1 || py[i + 1] > p){ px[i + 1] = px[i]; py[i + 1] = py[i]; } } if (px[id[p]] != up[p]){ for (int i = p + 1; i < Y + 2; i++){ int cnt = ans[i].size(); for (int j = 0; j < cnt; j++){ ans[i][j]--; } } } } for (int i = 0; i < Y + 2; i++){ ans[i].erase(unique(ans[i].begin(), ans[i].end()), ans[i].end()); } int M = 0; for (int i = 0; i < Y + 2; i++){ M += ans[i].size(); } cout << M << endl; for (int i = 0; i < Y + 2; i++){ int cnt = ans[i].size(); for (int j = 0; j < cnt; j++){ cout << ans[i][j] << ' ' << i << endl; } } } } }