結果
問題 |
No.3193 Submit Your Solution
|
ユーザー |
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提出日時 | 2025-06-27 21:52:30 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 2,658 bytes |
コンパイル時間 | 5,335 ms |
コンパイル使用メモリ | 335,084 KB |
実行使用メモリ | 9,952 KB |
最終ジャッジ日時 | 2025-06-27 21:52:50 |
合計ジャッジ時間 | 19,012 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | TLE * 1 -- * 16 |
ソースコード
/** author: shobonvip created: 2025.06.27 21:35:34 **/ #include<bits/stdc++.h> using namespace std; //* ATCODER #include<atcoder/all> using namespace atcoder; typedef modint998244353 mint; //*/ /* BOOST MULTIPRECISION #include<boost/multiprecision/cpp_int.hpp> using namespace boost::multiprecision; //*/ typedef long long ll; #define rep(i, s, n) for (int i = (int)(s); i < (int)(n); i++) #define rrep(i, s, n) for (int i = (int)(n)-1; i >= (int)(s); i--) #define all(v) v.begin(), v.end() template <typename T> bool chmin(T &a, const T &b) { if (a <= b) return false; a = b; return true; } template <typename T> bool chmax(T &a, const T &b) { if (a >= b) return false; a = b; return true; } template <typename T> T max(vector<T> &a){ assert(!a.empty()); T ret = a[0]; for (int i=0; i<(int)a.size(); i++) chmax(ret, a[i]); return ret; } template <typename T> T min(vector<T> &a){ assert(!a.empty()); T ret = a[0]; for (int i=0; i<(int)a.size(); i++) chmin(ret, a[i]); return ret; } template <typename T> T sum(vector<T> &a){ T ret = 0; for (int i=0; i<(int)a.size(); i++) ret += a[i]; return ret; } typedef unsigned long long ull; int f1[200001],f2[200001],g1[400001],g2[400001]; ull d1[200001],d2[200001],ans=0; int mada[999999]; bool seen[999999]; int main(){ ios_base::sync_with_stdio(false); cin.tie(NULL); int n; cin >> n; vector<int> u(n-1), v(n-1), x(n-1), y(n-1); vector ikeru1(n, vector<int>(0)); vector ikeru2(n, vector<int>(0)); rep(i,0,n-1) { cin >> u[i] >> v[i]; u[i]--; v[i]--; ikeru1[u[i]].push_back(v[i]); ikeru1[v[i]].push_back(u[i]); } rep(i,0,n-1) { cin >> x[i] >> y[i]; x[i]--; y[i]--; ikeru2[x[i]].push_back(y[i]); ikeru2[y[i]].push_back(x[i]); } { int piv = 0; rep(i,0,n) { for (int x: ikeru1[i]) { g1[piv++] = x; } f1[i+1] = piv; } } { int piv = 0; rep(i,0,n) { for (int x: ikeru2[i]) { g2[piv++] = x; } f2[i+1] = piv; } } rep(st,0,n) { { fill(seen,seen+n,false); int piv = 1; mada[0] = st; seen[st] = 1; d1[st] = 0; while (piv > 0) { int i = mada[--piv]; rep(x,f1[i],f1[i+1]){ int j = g1[x]; if (!seen[j]) { d1[j] = d1[i] + 1; mada[piv++] = j; seen[j] = 1; } } } } { fill(seen,seen+n,false); int piv = 1; mada[0] = st; seen[st] = 1; d2[st] = 0; while (piv > 0) { int i = mada[--piv]; rep(x,f2[i],f2[i+1]){ int j = g2[x]; if (!seen[j]) { d2[j] = d2[i] + 1; mada[piv++] = j; seen[j] = 1; } } } } rep(i,st+1,n){ ans += d1[i] * d2[i]; } } ans *= 2; cout << ans << endl; }