結果
問題 | No.2595 Parsing Challenge |
ユーザー | SSRS |
提出日時 | 2023-08-23 07:42:47 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,069 bytes |
コンパイル時間 | 2,650 ms |
コンパイル使用メモリ | 221,812 KB |
実行使用メモリ | 184,080 KB |
最終ジャッジ日時 | 2024-09-27 11:32:39 |
合計ジャッジ時間 | 15,745 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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 | WA | - |
testcase_01 | WA | - |
testcase_02 | AC | 2 ms
6,812 KB |
testcase_03 | WA | - |
testcase_04 | AC | 2 ms
6,944 KB |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,940 KB |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | AC | 2 ms
6,940 KB |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | RE | - |
testcase_16 | RE | - |
testcase_17 | RE | - |
testcase_18 | WA | - |
testcase_19 | RE | - |
testcase_20 | RE | - |
testcase_21 | RE | - |
testcase_22 | RE | - |
testcase_23 | RE | - |
testcase_24 | RE | - |
testcase_25 | RE | - |
testcase_26 | RE | - |
testcase_27 | RE | - |
testcase_28 | RE | - |
testcase_29 | RE | - |
testcase_30 | RE | - |
testcase_31 | RE | - |
testcase_32 | RE | - |
testcase_33 | RE | - |
testcase_34 | RE | - |
testcase_35 | RE | - |
testcase_36 | RE | - |
testcase_37 | RE | - |
testcase_38 | RE | - |
testcase_39 | RE | - |
testcase_40 | RE | - |
testcase_41 | RE | - |
testcase_42 | RE | - |
testcase_43 | AC | 183 ms
184,080 KB |
testcase_44 | WA | - |
testcase_45 | WA | - |
testcase_46 | WA | - |
testcase_47 | WA | - |
testcase_48 | WA | - |
testcase_49 | WA | - |
testcase_50 | WA | - |
testcase_51 | WA | - |
testcase_52 | WA | - |
testcase_53 | WA | - |
testcase_54 | WA | - |
testcase_55 | WA | - |
testcase_56 | WA | - |
testcase_57 | WA | - |
testcase_58 | WA | - |
testcase_59 | WA | - |
ソースコード
#include <bits/stdc++.h> using namespace std; struct parser{ int V = 0; vector<vector<int>> c; vector<string> s; parser(string &S){ int p = 0; expr(S, p); } int number(string &S, int &p){ string tmp; while (isdigit(S[p]) != 0){ tmp += S[p]; p++; } c.push_back(vector<int>(0)); s.push_back(tmp); V++; return V - 1; } int factor(string &S, int &p){ if (isdigit(S[p]) != 0){ return number(S, p); } else { p++; int ans = expr(S, p); p++; return ans; } } int term(string &S, int &p){ int ans = factor(S, p); while (S[p] == '*'){ p++; int ans2 = factor(S, p); c.push_back(vector<int>{ans, ans2}); s.push_back("*"); V++; ans = V - 1; } return ans; } int expr(string &S, int &p){ int ans = term(S, p); while (S[p] == '+' || S[p] == '-'){ char op = S[p]; p++; int ans2 = term(S, p); c.push_back(vector<int>{ans, ans2}); s.push_back(string(1, op)); V++; ans = V - 1; } return ans; } }; int main(){ int N; cin >> N; string S; cin >> S; parser P(S); vector<int> sz(P.V); for (int i = 0; i < P.V; i++){ if (P.c[i].empty()){ sz[i] = P.s[i].size(); } else { sz[i] = sz[P.c[i][0]] + sz[P.c[i][1]]; } } vector<bool> head(P.V, false); head[P.V - 1] = true; for (int i = 0; i < P.V; i++){ if (!P.c[i].empty()){ if (sz[P.c[i][0]] < sz[P.c[i][1]]){ swap(P.c[i][0], P.c[i][1]); if (P.s[i] == "-"){ P.s[i] = "--"; } } head[P.c[i][1]] = true; } } vector<long long> dp(P.V); for (int i = 0; i < P.V; i++){ if (head[i]){ vector<int> id; for (int v = i; ; v = P.c[v][0]){ id.push_back(v); if (P.c[v].empty()){ break; } } dp[i] = stoll(P.s[id.back()]); id.pop_back(); if (!id.empty()){ int cnt = id.size(); vector<pair<long long, long long>> F(cnt); for (int j = 0; j < cnt; j++){ int v = id[j]; if (P.s[v] == "+"){ F[j] = make_pair(1, dp[P.c[v][1]]); } if (P.s[v] == "-"){ F[j] = make_pair(1, -dp[P.c[v][1]]); } if (P.s[v] == "--"){ F[j] = make_pair(-1, dp[P.c[v][1]]); } if (P.s[v] == "*"){ F[j] = make_pair(dp[P.c[v][1]], 0); } } auto dfs = [&](auto dfs, int L, int R) -> pair<long long, long long> { if (R - L == 1){ return F[L]; } else { int m = (L + R) / 2; pair<long long, long long> ansL = dfs(dfs, L, m); pair<long long, long long> ansR = dfs(dfs, m, R); return make_pair(ansL.first * ansR.first, ansL.first * ansR.second + ansL.second); } }; pair<long long, long long> ans = dfs(dfs, 0, cnt); dp[i] = dp[i] * ans.first + ans.second; } } } cout << dp[P.V - 1] << endl; }