結果
問題 | No.1103 Directed Length Sum |
ユーザー | Konton7 |
提出日時 | 2020-07-03 23:48:47 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 686 ms / 3,000 ms |
コード長 | 5,093 bytes |
コンパイル時間 | 2,442 ms |
コンパイル使用メモリ | 214,588 KB |
実行使用メモリ | 155,488 KB |
最終ジャッジ日時 | 2024-09-17 05:07:30 |
合計ジャッジ時間 | 9,383 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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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
6,816 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 356 ms
155,488 KB |
testcase_03 | AC | 188 ms
50,376 KB |
testcase_04 | AC | 361 ms
36,508 KB |
testcase_05 | AC | 686 ms
60,740 KB |
testcase_06 | AC | 217 ms
24,836 KB |
testcase_07 | AC | 36 ms
8,448 KB |
testcase_08 | AC | 58 ms
11,136 KB |
testcase_09 | AC | 22 ms
6,944 KB |
testcase_10 | AC | 97 ms
14,056 KB |
testcase_11 | AC | 406 ms
39,556 KB |
testcase_12 | AC | 228 ms
25,140 KB |
testcase_13 | AC | 90 ms
14,472 KB |
testcase_14 | AC | 17 ms
6,940 KB |
testcase_15 | AC | 169 ms
20,240 KB |
testcase_16 | AC | 462 ms
43,968 KB |
testcase_17 | AC | 486 ms
45,736 KB |
testcase_18 | AC | 97 ms
14,096 KB |
testcase_19 | AC | 416 ms
40,268 KB |
testcase_20 | AC | 29 ms
7,168 KB |
testcase_21 | AC | 55 ms
10,364 KB |
testcase_22 | AC | 336 ms
33,616 KB |
testcase_23 | AC | 182 ms
21,316 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; using VI = vector<int>; using VL = vector<ll>; using VS = vector<string>; using VB = vector<bool>; using VVI = vector<VI>; using VVL = vector<VL>; using PII = std::pair<int, int>; using PLL = std::pair<ll, ll>; using TI3 = std::tuple<int, int, int>; using TI4 = std::tuple<int, int, int, int>; using TL3 = std::tuple<ll, ll, ll>; using TL4 = std::tuple<ll, ll, ll, ll>; #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define repr(i, n) for (int i = (int)(n)-1; i >= 0; i--) #define rep2(i, s, n) for (int i = (s); i < (int)(n); i++) #define rep3(i, s, n, d) for (int i = (s); i < (int)(n); i += (d)) #define allpt(v) (v).begin(), (v).end() #define allpt_c(v) (v).cbegin(), (v).cend() #define allpt_r(v) (v).rbegin(), (v).rend() const int mod1 = 1e9 + 7, mod2 = 998244353, mod3 = 1e9 + 9; const int mod = mod1; const ll inf = 1e18; const string wsp = " "; const string tb = "\t"; const string rt = "\n"; template <typename T> void show1dvec(const vector<T> &v) { if (v.size() == 0) return; int n = v.size() - 1; rep(i, n) cout << v[i] << wsp; cout << v[n] << rt; return; } template <typename T> void show2dvec(const vector<vector<T>> &v) { int n = v.size(); rep(i, n) show1dvec(v[i]); } template <typename T, typename S> void show1dpair(const vector<pair<T, S>> &v) { int n = v.size(); rep(i, n) cout << v[i].first << wsp << v[i].second << rt; return; } template <typename T, typename S> void pairzip(const vector<pair<T, S>> &v, vector<T> &t, vector<T> &s) { int n = v.size(); rep(i, n) { t.push_back(v[i].first); s.push_back(v[i].second); } return; } template <typename T> void maxvec(vector<T> &v) { T s = v[0]; int n = v.size(); rep(i, n - 1) { if (s > v[i + 1]) { v[i + 1] = s; } s = v[i + 1]; } } template <typename T, typename S> bool myfind(T t, S s) { return find(t.cbegin(), t.cend(), s) != t.cend(); } bool check(int y, int x, int h, int w) { return 0 <= y && y < h && 0 <= x && x < w; } template <typename T> vector<T> cumsum(const vector<T> &v) { T s = 0; vector<T> ret; rep(i, v.size()) { s += v[i]; s %= mod; ret.emplace_back(s); } return ret; } bool iskadomatsu(int a, int b, int c) { return (a != b && b != c && c != a) && ((a > b && b < c) || (a < b && b > c)); } VS split(string s, char c) { VS ret; string part; s += c; rep(i, s.length()) { if (s[i] == c) { ret.emplace_back(part); part = ""; } else if (s[i] != c) { part += s[i]; } } return ret; } string removezero(string &s) { string ret; for (auto z : s) if (z != '0') ret += z; return ret; } ll sumdigit(ll x) { ll ans{0}; while (x > 0) { ans += x % 10; x /= 10; } return ans; } template <typename T, typename S, typename R> ll pow_mod(T p, S q, R mod = 1ll) { ll ret = 1, r = p; while (q) { if (q % 2) ret *= r, ret %= mod; r = (r * r) % mod, q /= 2; } return ret % mod; } template <typename T, typename S> ll pow_no_mod(T p, S q) { ll ret = 1, r = p; while (q) { if (q % 2) ret *= r; r = (r * r), q /= 2; } return ret; } void make_frac_tables(VL &frac_list, VL &frac_inv_list) { rep(i, frac_list.size() - 1) { frac_list[i + 1] *= frac_list[i] * (i + 1); frac_list[i + 1] %= mod; frac_inv_list[i + 1] *= frac_inv_list[i] * pow_mod(i + 1, mod - 2, mod); frac_inv_list[i + 1] %= mod; } } ll comb(int a, int b, const VL &frac_list, const VL &frac_inv_list) { if (a < b) return 0; if (b < 0) return 0; ll ret = frac_list[a]; ret *= frac_inv_list[b]; ret %= mod; ret *= frac_inv_list[a - b]; ret %= mod; return ret; } const int maxint = 1e9; VL depth; VL descendants; VVI connective; void dfs(int v) { for (auto u : connective[v]) { depth[u] = depth[v] + 1; dfs(u); descendants[v] += descendants[u]; } } int main() { cin.tie(0); ios::sync_with_stdio(false); #ifdef DEBUG cout << "DEBUG MODE" << endl; ifstream in("input.txt"); //for debug cin.rdbuf(in.rdbuf()); //for debug #endif int n, a, b, root; ll ans{0}; cin >> n; VI indeg(n, 0); depth.resize(n); fill(allpt(depth), 0); descendants.resize(n); fill(allpt(descendants), 1); connective.resize(n); rep(i, n - 1) { cin >> a >> b; --a, --b; connective[a].emplace_back(b); indeg[b]++; } root = min_element(allpt_c(indeg)) - indeg.cbegin(); dfs(root); // show1dvec(depth); // show1dvec(descendants); rep(i, n) { ans += (depth[i] * descendants[i]) % mod; ans %= mod; } cout << ans << rt; return 0; }