結果
問題 | No.19 ステージの選択 |
ユーザー | hamray |
提出日時 | 2021-03-20 17:09:14 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 5,680 bytes |
コンパイル時間 | 1,988 ms |
コンパイル使用メモリ | 185,660 KB |
実行使用メモリ | 6,824 KB |
最終ジャッジ日時 | 2024-11-21 05:41:47 |
合計ジャッジ時間 | 2,967 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
(要ログイン)
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 | WA | - |
testcase_01 | WA | - |
testcase_02 | WA | - |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
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 | - |
ソースコード
#include <bits/stdc++.h> //#include <atcoder/all> //using namespace atcoder; #pragma GCC target ("avx") #pragma GCC optimization ("O3") #pragma GCC optimization ("unroll-loops") using namespace std; typedef vector<int> VI; typedef vector<VI> VVI; typedef vector<string> VS; typedef pair<int, int> PII; typedef pair<int, int> pii; typedef pair<long long, long long> PLL; typedef pair<int, PII> TIII; typedef long long ll; typedef long double ld; typedef unsigned long long ull; #define FOR(i, s, n) for (int i = s; i < (int)n; ++i) #define REP(i, n) FOR(i, 0, n) #define rep(i, a, b) for (int i = a; i < (b); ++i) #define trav(a, x) for (auto &a : x) #define all(x) x.begin(), x.end() #define MOD 1000000007 template<class T1, class T2> inline bool chmax(T1 &a, T2 b) {if (a < b) {a = b; return true;} return false;} template<class T1, class T2> inline bool chmin(T1 &a, T2 b) {if (a > b) {a = b; return true;} return false;} const double EPS = 1e-6, PI = acos(-1); const double pi = 3.141592653589793238462643383279; //ここから編集 typedef string::const_iterator State; ll GCD(ll a, ll b){ return (b==0)?a:GCD(b, a%b); } ll LCM(ll a, ll b){ return a/GCD(a, b) * b; } template< int mod > struct ModInt { int x; ModInt() : x(0) {} ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} ModInt &operator+=(const ModInt &p) { if((x += p.x) >= mod) x -= mod; return *this; } ModInt &operator-=(const ModInt &p) { if((x += mod - p.x) >= mod) x -= mod; return *this; } ModInt &operator*=(const ModInt &p) { x = (int) (1LL * x * p.x % mod); return *this; } ModInt &operator/=(const ModInt &p) { *this *= p.inverse(); return *this; } ModInt operator-() const { return ModInt(-x); } ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; } ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; } ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; } ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; } bool operator==(const ModInt &p) const { return x == p.x; } bool operator!=(const ModInt &p) const { return x != p.x; } ModInt inverse() const { int a = x, b = mod, u = 1, v = 0, t; while(b > 0) { t = a / b; swap(a -= t * b, b); swap(u -= t * v, v); } return ModInt(u); } ModInt pow(int64_t n) const { ModInt ret(1), mul(x); while(n > 0) { if(n & 1) ret *= mul; mul *= mul; n >>= 1; } return ret; } friend ostream &operator<<(ostream &os, const ModInt &p) { return os << p.x; } friend istream &operator>>(istream &is, ModInt &a) { int64_t t; is >> t; a = ModInt< mod >(t); return (is); } static int get_mod() { return mod; } }; using modint = ModInt< 998244353 >; template< typename T > struct Combination { vector< T > _fact, _rfact, _inv; Combination(int sz) : _fact(sz + 1), _rfact(sz + 1), _inv(sz + 1) { _fact[0] = _rfact[sz] = _inv[0] = 1; for(int i = 1; i <= sz; i++) _fact[i] = _fact[i - 1] * i; _rfact[sz] /= _fact[sz]; for(int i = sz - 1; i >= 0; i--) _rfact[i] = _rfact[i + 1] * (i + 1); for(int i = 1; i <= sz; i++) _inv[i] = _rfact[i] * _fact[i - 1]; } inline T fact(int k) const { return _fact[k]; } inline T rfact(int k) const { return _rfact[k]; } inline T inv(int k) const { return _inv[k]; } T P(int n, int r) const { if(r < 0 || n < r) return 0; return fact(n) * rfact(n - r); } T C(int p, int q) const { if(q < 0 || p < q) return 0; return fact(p) * rfact(q) * rfact(p - q); } T H(int n, int r) const { if(n < 0 || r < 0) return (0); return r == 0 ? 1 : C(n + r - 1, r); } }; int modpow(ll x, ll n, int mod) { if(x == 0) return 0; ll res = 1; while(n) { if(n&1) res = res*x % mod; x = x*x%mod; n >>= 1; } return res; } vector<vector<int>> g(310); vector<vector<int>> rg(310); bool used[310]; vector<int> vs; int cmp[310]; vector<vector<int>> ng(310); void dfs(int v){ used[v] = true; for(auto u: g[v]) if(!used[u]) dfs(u); vs.push_back(v); } void rdfs(int v, int k){ used[v] = true; cmp[v] = k; for(auto u: rg[v]) if(!used[u]) rdfs(u, k); } int scc(int N){ memset(used, false, sizeof(used)); REP(i,N){ if(!used[i]) dfs(i); } memset(used, false, sizeof(used)); memset(cmp, -1, sizeof(cmp)); reverse(all(vs)); int k = 0; for(auto i: vs){ if(!used[i]) { rdfs(i, k); k++; } } ng.resize(k); REP(i,N){ for(auto j: g[i]){ if(cmp[i] != cmp[j]){ ng[cmp[i]].push_back(cmp[j]); } } } REP(i,k){ sort(all(ng[i])); ng[i].erase(unique(all(ng[i])), ng[i].end()); } return k; } int main() { cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(7); int N; cin >> N; vector<int> L(N), S(N); REP(i,N) { cin >> L[i] >> S[i]; S[i]--; g[S[i]].push_back(i); rg[i].push_back(S[i]); } int k = scc(N); vector<bool> checked(k, false); double ans = 0.0; REP(i,k) { if(checked[i]) continue; int mi = 1e9; int idx = -1; REP(j,N) { if(cmp[j] == i) { if(chmin(mi, L[j])){ idx = j; } } } ans += mi; queue<int> q; q.push(i); while(q.size()) { int v = q.front(); q.pop(); for(int j=0; j<N; j++) { if(cmp[j] == v && j != idx) { ans += (double)L[j]/2; } } for(auto u: ng[v]) { if(checked[u]) continue; q.push(u); checked[u] = true; } } } cout << ans << endl; return 0; }