結果
問題 | No.439 チワワのなる木 |
ユーザー | first_vil |
提出日時 | 2020-07-03 18:47:25 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 80 ms / 5,000 ms |
コード長 | 5,466 bytes |
コンパイル時間 | 2,263 ms |
コンパイル使用メモリ | 209,916 KB |
実行使用メモリ | 36,864 KB |
最終ジャッジ日時 | 2024-09-16 17:17:41 |
合計ジャッジ時間 | 3,730 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 1 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 3 ms
5,376 KB |
testcase_17 | AC | 3 ms
5,376 KB |
testcase_18 | AC | 39 ms
8,448 KB |
testcase_19 | AC | 33 ms
8,192 KB |
testcase_20 | AC | 52 ms
9,984 KB |
testcase_21 | AC | 14 ms
5,504 KB |
testcase_22 | AC | 14 ms
5,376 KB |
testcase_23 | AC | 61 ms
12,928 KB |
testcase_24 | AC | 80 ms
32,768 KB |
testcase_25 | AC | 42 ms
12,672 KB |
testcase_26 | AC | 46 ms
13,712 KB |
testcase_27 | AC | 68 ms
36,864 KB |
ソースコード
//四則演算 #pragma GCC target("avx") //並列計算 #pragma GCC optimize("O3") //条件分岐を減らす #pragma GCC optimize("unroll-loops") //浮動小数点演算 #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") #include <bits/stdc++.h> using namespace std; using ll = long long; using ld = long double; using VI = vector<int>; using VL = vector<ll>; using VS = vector<string>; template<class T> using PQ = priority_queue<T, vector<T>, greater<T>>; #define FOR(i,a,n) for(int i=(a);i<(n);++i) #define eFOR(i,a,n) for(int i=(a);i<=(n);++i) #define rFOR(i,a,n) for(int i=(n)-1;i>=(a);--i) #define erFOR(i,a,n) for(int i=(n);i>=(a);--i) #define each(i, a) for(auto &i : a) #define SORT(a) sort(a.begin(),a.end()) #define rSORT(a) sort(a.rbegin(),a.rend()) #define fSORT(a,f) sort(a.begin(),a.end(),f) #define all(a) a.begin(),a.end() #define out(y,x) ((y)<0||h<=(y)||(x)<0||w<=(x)) #define tp(a,i) get<i>(a) #define line cout << "-----------------------------\n" #define ENDL(i,n) ((i) == (n) - 1 ? "\n" : " ") #define stop system("pause") constexpr ll INF = 1000000000; constexpr ll LLINF = 1LL << 60; constexpr ll mod = 1000000007; constexpr ll MOD = 998244353; constexpr ld eps = 1e-10; constexpr ld pi = 3.1415926535897932; template<class T>inline bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; }return false; } template<class T>inline bool chmin(T& a, const T& b) { if (a > b) { a = b; return true; }return false; } inline void init() { cin.tie(nullptr); cout.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(15); } template<class T>inline istream& operator>>(istream& is, vector<T>& v) { for (auto& a : v)is >> a; return is; } template<class T>inline istream& operator>>(istream& is, deque<T>& v) { for (auto& a : v)is >> a; return is; } template<class T, class U>inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; } template<class T>inline vector<T> vec(size_t a) { return vector<T>(a); } template<class T>inline vector<T> defvec(T def, size_t a) { return vector<T>(a, def); } template<class T, class... Ts>inline auto vec(size_t a, Ts... ts) { return vector<decltype(vec<T>(ts...))>(a, vec<T>(ts...)); } template<class T, class... Ts>inline auto defvec(T def, size_t a, Ts... ts) { return vector<decltype(defvec<T>(def, ts...))>(a, defvec<T>(def, ts...)); } template<class T>inline void print(const T& a) { cout << a << "\n"; } template<class T1, class T2>inline void print(const pair<T1, T2>& a) { cout << a.first << " " << a.second << "\n"; } template<class T, class... Ts>inline void print(const T& a, const Ts&... ts) { cout << a << " "; print(ts...); } template<class T>inline void print(const vector<T>& v) { for (int i = 0; i < v.size(); ++i)cout << v[i] << "\n"; } template<class T1, class T2>inline void print(const vector<pair<T1, T2>>& v) { for (auto& a : v)print(a); } template<class T>inline void print(const vector<vector<T>>& v) { for (auto& a : v)print(a); } inline string reversed(const string& s) { string t = s; reverse(all(t)); return t; } pair<ll, ll> operator+=(pair<ll, ll>& x, const pair<ll, ll>& y) { x.first += y.first; x.second += y.second; return x; } pair<ll, ll> operator+(pair<ll, ll> x, const pair<ll, ll> y) { return x += y; } pair<ll, ll> operator-=(pair<ll, ll>& x, const pair<ll, ll>& y) { x.first -= y.first; x.second -= y.second; return x; } pair<ll, ll> operator-(pair<ll, ll> x, const pair<ll, ll> y) { return x -= y; } int main() { init(); int n; cin >> n; string s; cin >> s; vector<VI> g(n); FOR(i, 0, n - 1) { int a, b; cin >> a >> b; --a, --b; g[a].push_back(b); g[b].push_back(a); } #define w first #define c second vector<pair<ll, ll>> wc(n); { auto dfs = [&](auto&& f, int cur, int par)->void { if (s[cur] == 'w')++wc[cur].w; else ++wc[cur].c; int idx = -1, sz = g[cur].size(); for (int i = 0, to; i < sz; ++i) { to = g[cur][i]; if (to == par)idx = i; else { f(f, to, cur); wc[cur].w += wc[to].w; wc[cur].c += wc[to].c; } } if (idx != -1)g[cur].erase(g[cur].begin() + idx); }; dfs(dfs, 0, -1); } ll ans1 = 0, ans2 = 0; { auto dfs = [&](auto&& f, int cur, pair<ll, ll> x)->void { int sz = g[cur].size(); vector<pair<ll, ll>> l(sz), r(sz); pair<ll, ll> y = s[cur] == 'w' ? pair<ll, ll>(1LL, 0LL) : pair<ll, ll>(0LL, 1LL); for (int i = 0, to; i < sz; ++i) { to = g[cur][i]; if (i < sz - 1)l[i + 1] = wc[to] + l[i]; if (0 < i)r[i - 1] = wc[to]; } rFOR(i, 0, sz - 1)r[i] += r[i + 1]; if (s[cur] == 'w') { ans1 += x.w * (wc[cur] - y).c; ans1 += x.c * (wc[cur] - y).w; } for (int i = 0, to; i < sz; ++i) { to = g[cur][i]; if (s[cur] == 'w') { ans2 += wc[to].w * (l[i] + r[i]).c; ans2 += wc[to].c * (l[i] + r[i]).w; } f(f, to, x + l[i] + r[i] + y); } }; dfs(dfs, 0, pair<ll, ll>()); } print(ans1 + ans2 / 2); return 0; }