結果
問題 | No.439 チワワのなる木 |
ユーザー | is_eri23 |
提出日時 | 2016-10-29 00:13:35 |
言語 | C++11 (gcc 11.4.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,881 bytes |
コンパイル時間 | 1,141 ms |
コンパイル使用メモリ | 162,104 KB |
実行使用メモリ | 21,376 KB |
最終ジャッジ日時 | 2024-11-24 06:48:08 |
合計ジャッジ時間 | 2,374 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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 | 3 ms
5,888 KB |
testcase_01 | AC | 2 ms
5,760 KB |
testcase_02 | AC | 3 ms
5,888 KB |
testcase_03 | AC | 2 ms
5,760 KB |
testcase_04 | AC | 3 ms
5,760 KB |
testcase_05 | AC | 2 ms
5,888 KB |
testcase_06 | AC | 3 ms
5,760 KB |
testcase_07 | AC | 3 ms
5,760 KB |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | AC | 47 ms
19,456 KB |
testcase_25 | AC | 32 ms
10,736 KB |
testcase_26 | WA | - |
testcase_27 | AC | 38 ms
21,376 KB |
ソースコード
#include <bits/stdc++.h> #define EPS 1e-9 #define INF 1070000000LL #define MOD 1000000007LL #define fir first #define foreach(it,X) for(auto it=(X).begin();it!=(X).end();it++) #define numa(x,a) for(auto x: a) #define ite iterator #define mp make_pair #define rep(i,n) rep2(i,0,n) #define rep2(i,m,n) for(int i=m;i<(n);i++) #define pb push_back #define pf push_front #define sec second #define sz(x) ((int)(x).size()) #define ALL( c ) (c).begin(), (c).end() #define gcd(a,b) __gcd(a,b) #define mem(x,n) memset(x,n,sizeof(x)) #define endl "\n" using namespace std; template <int POS, class TUPLE> void deploy(std::ostream &os, const TUPLE &tuple){} template <int POS, class TUPLE, class H, class ...Ts> void deploy(std::ostream &os, const TUPLE &t){ os << (POS == 0 ? "" : ", ") << get<POS>(t); deploy<POS + 1, TUPLE, Ts...>(os, t); } template <class T,class U> std::ostream& operator<<(std::ostream &os, std::pair<T,U> &p){ os << "(" << p.first <<", " << p.second <<")";return os; } template <class T> std::ostream& operator<<(std::ostream &os, std::vector<T> &v){ int remain = v.size(); os << "{"; for(auto e: v) os << e << (--remain == 0 ? "}" : ", "); return os; } template <class T> std::ostream& operator<<(std::ostream &os, std::set<T> &v){ int remain = v.size(); os << "{"; for(auto e: v) os << e << (--remain == 0 ? "}" : ", "); return os; } template <class T, class K> std::ostream& operator<<(std::ostream &os, std::map<T, K> &mp){ int remain = mp.size(); os << "{"; for(auto e: mp) os << "(" << e.first << " -> " << e.second << ")" << (--remain == 0 ? "}" : ", "); return os; } #define DEBUG1(var0) { std::cerr << (#var0) << "=" << (var0) << endl; } #define DEBUG2(var0, var1) { std::cerr << (#var0) << "=" << (var0) << ", ";DEBUG1(var1); } #define DEBUG3(var0, var1, var2) { std::cerr << (#var0) << "=" << (var0) << ", ";DEBUG2(var1,var2); } #define DEBUG4(var0, var1, var2, var3) { std::cerr << (#var0) << "=" << (var0) << ", ";DEBUG3(var1,var2,var3); } using ll = long long; vector <int> edge[100100]; int N; string S; ll c[100100]; ll w[100100]; ll C, W; ll ans; void dfs(int v, int par = -1) { ll tmpc = 0; ll tmpw = 0; numa(nv, edge[v]) { if (nv == par) { continue; } dfs(nv, v); if (S[v] == 'w') { ans += (long long) c[nv] * (W - w[nv] - 1); ans += (long long) (C - c[nv]) * w[nv]; } tmpc += c[nv]; tmpw += w[nv]; } if (S[v] == 'w') { tmpw++; } else { tmpc++; } c[v] = tmpc; w[v] = tmpw; //DEBUG3(v, c[v], w[v]); } int main() { cin.tie(0); ios_base::sync_with_stdio(0); cin >> N; cin >> S; C = 0; W = 0; ans = 0; numa(c,S){ if (c == 'c') { C++; } else { W++; } } rep(i,N-1){ int x,y; cin >> x >> y; x--; y--; edge[x].pb(y); edge[y].pb(x); } dfs(0); cout << ans << endl; return 0; }