結果
問題 | No.2360 Path to Integer |
ユーザー | au7777 |
提出日時 | 2023-07-06 00:32:42 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 5,391 bytes |
コンパイル時間 | 4,408 ms |
コンパイル使用メモリ | 246,948 KB |
実行使用メモリ | 23,472 KB |
最終ジャッジ日時 | 2024-07-19 18:47:04 |
合計ジャッジ時間 | 9,298 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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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
10,624 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 3 ms
5,376 KB |
testcase_08 | AC | 15 ms
5,376 KB |
testcase_09 | AC | 170 ms
22,784 KB |
testcase_10 | TLE | - |
testcase_11 | -- | - |
testcase_12 | -- | - |
testcase_13 | -- | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
コンパイルメッセージ
main.cpp: In function 'void dfs2(int, int, std::vector<std::__cxx11::basic_string<char> >&, std::vector<std::vector<int> >&, std::vector<std::vector<atcoder::static_modint<998244353> > >&)': main.cpp:121:23: warning: 'parIdx' may be used uninitialized [-Wmaybe-uninitialized] 121 | dp[cur][parIdx] = 1; | ^ main.cpp:113:13: note: 'parIdx' was declared here 113 | int parIdx; | ^~~~~~ main.cpp: In function 'int dfs3(int, int, std::vector<std::vector<int> >&, std::vector<std::vector<int> >&)': main.cpp:153:24: warning: 'parIdx' may be used uninitialized [-Wmaybe-uninitialized] 153 | num[cur][parIdx] = edge.size() - ret; | ^ main.cpp:141:9: note: 'parIdx' was declared here 141 | int parIdx; | ^~~~~~
ソースコード
#include <bits/stdc++.h> #include <atcoder/all> typedef long long int ll; using namespace std; typedef pair<ll, ll> P; using namespace atcoder; template<typename T> using min_priority_queue = priority_queue<T, vector<T>, greater<T>>; #define USE998244353 #ifdef USE998244353 const ll MOD = 998244353; // const double PI = 3.141592653589; using mint = modint998244353; #else const ll MOD = 1000000007; using mint = modint1000000007; #endif const int MAX = 20000001; long long fac[MAX], finv[MAX], inv[MAX]; void COMinit() { fac[0] = fac[1] = 1; finv[0] = finv[1] = 1; inv[1] = 1; for (int i = 2; i < MAX; i++){ fac[i] = fac[i - 1] * i % MOD; inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD; finv[i] = finv[i - 1] * inv[i] % MOD; } } long long COM(int n, int k){ if (n < k) return 0; if (n < 0 || k < 0) return 0; return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD; } ll gcd(ll x, ll y) { if (y == 0) return x; else if (y > x) { return gcd (y, x); } else return gcd(x % y, y); } ll lcm(ll x, ll y) { return x / gcd(x, y) * y; } ll my_sqrt(ll x) { // ll m = 0; ll M = 3000000001; while (M - m > 1) { ll now = (M + m) / 2; if (now * now <= x) { m = now; } else { M = now; } } return m; } ll keta(ll num, ll arity) { ll ret = 0; while (num) { num /= arity; ret++; } return ret; } ll ceil(ll n, ll m) { // n > 0, m > 0 ll ret = n / m; if (n % m) ret++; return ret; } ll pow_ll(ll x, ll n) { if (n == 0) return 1; if (n % 2) { return pow_ll(x, n - 1) * x; } else { ll tmp = pow_ll(x, n / 2); return tmp * tmp; } } vector<ll> compress(vector<ll>& v) { // [3 5 5 6 1 1 10 1] -> [1 2 2 3 0 0 4 0] vector<ll> u = v; sort(u.begin(), u.end()); u.erase(unique(u.begin(),u.end()),u.end()); map<ll, ll> mp; for (int i = 0; i < u.size(); i++) { mp[u[i]] = i; } for (int i = 0; i < v.size(); i++) { v[i] = mp[v[i]]; } return v; } mint dfs1(int cur, int par, vector<string>& a, vector<vector<int>>& edge, vector<vector<mint>>& dp) { mint ret = 1; for (int i = 0; i < edge[cur].size(); i++) { int nex = edge[cur][i]; if (nex == par) continue; mint tmp = dfs1(nex, cur, a, edge, dp); dp[cur][i] = tmp; ret += tmp; } ret *= pow_mod(10, a[cur].size(), MOD); return ret; } void dfs2(int cur, int par, vector<string>& a, vector<vector<int>>& edge, vector<vector<mint>>& dp) { if (par != -1) { int parIdx; for (int i = 0; i < edge[cur].size(); i++) { int nex = edge[cur][i]; if (nex == par) { parIdx = i; break; } } dp[cur][parIdx] = 1; for (int j = 0; j < edge[par].size(); j++) { if (edge[par][j] == cur) continue; // cerr << cur + 1 << ' ' << par + 1 << ' ' << edge[par][j] + 1 << ' ' << dp[par][j].val() << '\n'; dp[cur][parIdx] += dp[par][j]; } dp[cur][parIdx] *= pow_mod(10, a[par].size(), MOD); } for (int i = 0; i < edge[cur].size(); i++) { int nex = edge[cur][i]; if (nex == par) { continue; } dfs2(nex, cur, a, edge, dp); } } int dfs3(int cur, int par, vector<vector<int>>& edge, vector<vector<int>>& num) { int ret = 1; int parIdx; for (int i = 0; i < edge[cur].size(); i++) { int nex = edge[cur][i]; if (nex == par) { parIdx = i; continue; } int tmp = dfs3(nex, cur, edge, num); num[cur][i] = tmp; ret += tmp; } if (par != -1) { num[cur][parIdx] = edge.size() - ret; } return ret; } int main() { int n; cin >> n; vector<string> a(n); for (int i = 0; i < n; i++) cin >> a[i]; vector<vector<int>> edge(n); for (int i = 0; i < n - 1; i++) { int u, v; cin >> u >> v; u--; v--; edge[u].push_back(v); edge[v].push_back(u); } vector<vector<mint>> dp(n); for (int i = 0; i < n; i++) { dp[i].resize(edge[i].size()); } dfs1(0, -1, a, edge, dp); dfs2(0, -1, a, edge, dp); vector<vector<int>> num(n); for (int i = 0; i < n; i++) { num[i].resize(edge[i].size()); } dfs3(0, -1, edge, num); // dp[cur][i] ... 頂点curからi番目の辺を使った時に、全部でどれくらい掛け算されるか // num[cur][i]... 頂点curからi番目の辺を使った時の部分木の頂点の数 // for (int i = 0; i < n; i++) { // for (int j = 0; j < edge[i].size(); j++) { // cout << i + 1 << ' ' << edge[i][j] + 1 << ' ' << num[i][j] << '\n'; // } // } // mint mint ans = 0; for (int i = 0; i < n; i++) { mint nu = 0; for (auto c : a[i]) { nu *= 10; nu += (c - '0'); } for (int j = 0; j < edge[i].size(); j++) { // cerr << i + 1 << ' ' << edge[i][j] + 1 << ' ' << dp[i][j].val() << ' ' << num[i][j] << '\n'; ans += (dp[i][j]) * nu * (n - num[i][j]); } ans += n * nu; } cout << ans.val() << '\n'; return 0; }