結果
問題 | No.1002 Twotone |
ユーザー | 👑 tute7627 |
提出日時 | 2020-02-28 22:22:58 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2,297 ms / 5,000 ms |
コード長 | 4,812 bytes |
コンパイル時間 | 2,286 ms |
コンパイル使用メモリ | 201,420 KB |
実行使用メモリ | 91,520 KB |
最終ジャッジ日時 | 2024-10-13 17:54:51 |
合計ジャッジ時間 | 15,715 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 438 ms
16,128 KB |
testcase_04 | AC | 549 ms
20,072 KB |
testcase_05 | AC | 564 ms
19,968 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 180 ms
13,312 KB |
testcase_08 | AC | 325 ms
19,840 KB |
testcase_09 | AC | 327 ms
19,840 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 351 ms
17,768 KB |
testcase_12 | AC | 500 ms
21,760 KB |
testcase_13 | AC | 496 ms
21,888 KB |
testcase_14 | AC | 2 ms
5,248 KB |
testcase_15 | AC | 238 ms
13,440 KB |
testcase_16 | AC | 488 ms
20,992 KB |
testcase_17 | AC | 473 ms
21,028 KB |
testcase_18 | AC | 2 ms
5,248 KB |
testcase_19 | AC | 443 ms
21,376 KB |
testcase_20 | AC | 533 ms
27,520 KB |
testcase_21 | AC | 540 ms
27,096 KB |
testcase_22 | AC | 2 ms
5,248 KB |
testcase_23 | AC | 387 ms
24,320 KB |
testcase_24 | AC | 706 ms
36,924 KB |
testcase_25 | AC | 740 ms
36,992 KB |
testcase_26 | AC | 2 ms
5,248 KB |
testcase_27 | AC | 133 ms
42,232 KB |
testcase_28 | AC | 215 ms
53,468 KB |
testcase_29 | AC | 212 ms
53,476 KB |
testcase_30 | AC | 2 ms
5,248 KB |
testcase_31 | AC | 183 ms
53,056 KB |
testcase_32 | AC | 205 ms
53,264 KB |
testcase_33 | AC | 190 ms
53,136 KB |
testcase_34 | AC | 2,297 ms
91,520 KB |
ソースコード
#include<bits/stdc++.h> using namespace std; #define endl '\n' #define lfs cout<<fixed<<setprecision(10) #define ALL(a) (a).begin(),(a).end() #define ALLR(a) (a).rbegin(),(a).rend() #define spa << " " << #define fi first #define se second #define MP make_pair #define MT make_tuple #define PB push_back #define EB emplace_back #define rep(i,n,m) for(ll i = (n); i < (ll)(m); i++) #define rrep(i,n,m) for(ll i = (m) - 1; i >= (ll)(n); i--) using ll = long long; using ld = long double; const ll MOD = 1e9+7; //const ll MOD = 998244353; const ll INF = 1e18; using P = pair<ll, ll>; template<typename T> bool chmin(T &a,T b){if(a>b){a=b;return true;}else return false;} template<typename T> bool chmax(T &a,T b){if(a<b){a=b;return true;}else return false;} ll median(ll a,ll b, ll c){return a+b+c-max({a,b,c})-min({a,b,c});} void ans1(bool x){if(x) cout<<"Yes"<<endl;else cout<<"No"<<endl;} void ans2(bool x){if(x) cout<<"YES"<<endl;else cout<<"NO"<<endl;} void ans3(bool x){if(x) cout<<"Yay!"<<endl;else cout<<":("<<endl;} template<typename T1,typename T2> void ans(bool x,T1 y,T2 z){if(x)cout<<y<<endl;else cout<<z<<endl;} template<typename T> void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++) {cout<<v[i][0];for(ll j=1;j<w;j++)cout spa v[i][j];cout<<endl;}}; void debug(vector<string>&v,ll h,ll w){for(ll i=0;i<h;i++) {for(ll j=0;j<w;j++)cout<<v[i][j];cout<<endl;}}; template<typename T> void debug(vector<T>&v,ll n){if(n!=0)cout<<v[0]; for(ll i=1;i<n;i++)cout spa v[i];cout<<endl;}; template<typename T> vector<vector<T>>vec(ll x, ll y, T w){ vector<vector<T>>v(x,vector<T>(y,w));return v;} ll gcd(ll x,ll y){ll r;while(y!=0&&(r=x%y)!=0){x=y;y=r;}return y==0?x:y;} vector<ll>dx={1,0,-1,0,1,1,-1,-1}; vector<ll>dy={0,1,0,-1,1,-1,1,-1}; template<typename T> vector<T> make_v(size_t a,T b){return vector<T>(a,b);} template<typename... Ts> auto make_v(size_t a,Ts... ts){ return vector<decltype(make_v(ts...))>(a,make_v(ts...)); } ostream &operator<<(ostream &os, pair<ll, ll>&p){ return os << p.first << " " << p.second; } struct edge{ ll to=0,col=0; edge(){}; edge(ll t,ll c):to(t),col(c){}; }; struct CentroidDecomposition{ ll n; const vector<vector<edge>> &g; vector<bool> used;//既に重心として選ばれたか vector<ll> sub;//部分木のサイズ CentroidDecomposition(const vector<vector<edge>> &g):g(g){ n = g.size(); sub.assign(g.size(), 0); used.assign(g.size(), false); } ll search_centroid(ll root){ return dfs_search(root, -1, dfs_sz(root, -1) / 2 ); } ll dfs_sz(ll k, ll par){ sub[k] = 1; for(auto e:g[k]){ if(e.to == par || used[e.to])continue; sub[k] += dfs_sz(e.to, k); } return sub[k]; } ll dfs_search(ll k, ll par, ll mid){ for(auto e:g[k]){ if(e.to == par || used[e.to])continue; if(sub[e.to] > mid)return dfs_search(e.to, k, mid); } return k; } ll answer = 0; void run(){ //何か前処理を書くなら solve(0); } void solve(ll root){ ll cent = search_centroid(root); ll size = sub[root]; used[cent] = true; vector<map<P,ll>>mp; map<P,ll>sum; for(auto e:g[cent]){ if(!used[e.to]){ mp.emplace_back(); dfs(e.to,-1,mp.back(),MP(e.col,-1)); for(auto z:mp.back())sum[z.fi]+=z.se; } } //cout<<root<<endl; //cout<<"sumtest"<<endl; //for(auto z:sum)cout<<z.fi.fi spa z.fi.se spa z.se<<endl; for(auto mp2:mp){ for(auto z:mp2){ sum[z.fi]-=z.se; } for(auto z:mp2){ if(z.fi.fi==-1)continue; if(z.fi.se==-1){ answer+=sum[MP(-1,z.fi.fi)]*z.se; answer+=sum[MP(-1,-1)]*z.se; answer-=sum[MP(z.fi.fi,-1)]*z.se; } else{ answer+=sum[z.fi]*z.se; answer+=sum[MP(z.fi.fi,-1)]*z.se; answer+=sum[MP(z.fi.se,-1)]*z.se; answer+=z.se*2; } } for(auto z:mp2){ sum[z.fi]+=z.se; } } //cout<<"answer" spa answer<<endl; for(auto e:g[cent]){ if(!used[e.to]){ solve(e.to); } } used[cent] = false; return; //統治するなら何か返す } void dfs(ll k,ll par,map<P,ll>&mp,P c){ //cout<<k spa c.fi spa c.se<<endl; mp[MP(max(c.fi,c.se),min(c.fi,c.se))]++; if(c.se!=-1){ mp[MP(-1,c.fi)]++; mp[MP(-1,c.se)]++; } else mp[MP(-1,-1)]++; for(auto e:g[k]){ if(e.to==par||used[e.to])continue; if(c.fi==e.col||c.se==e.col)dfs(e.to,k,mp,c); else if(c.se==-1)dfs(e.to,k,mp,MP(c.fi,e.col)); } } }; int main(){ cin.tie(nullptr); ios_base::sync_with_stdio(false); ll res=0,buf=0; bool judge = true; ll n,k;cin>>n>>k; vector<vector<edge>>g(n); rep(i,0,n-1){ ll u,v,c;cin>>u>>v>>c; u--;v--;c--; g[u].EB(v,c); g[v].EB(u,c); } CentroidDecomposition cent(g); cent.run(); cout<<cent.answer/2<<endl; return 0; }