結果
問題 | No.1364 [Renaming] Road to Cherry from Zelkova |
ユーザー | akua |
提出日時 | 2022-11-14 11:04:14 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 342 ms / 2,500 ms |
コード長 | 7,210 bytes |
コンパイル時間 | 4,293 ms |
コンパイル使用メモリ | 195,132 KB |
実行使用メモリ | 75,460 KB |
最終ジャッジ日時 | 2024-09-15 13:25:05 |
合計ジャッジ時間 | 16,170 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 | 48 ms
34,560 KB |
testcase_01 | AC | 49 ms
34,560 KB |
testcase_02 | AC | 49 ms
34,560 KB |
testcase_03 | AC | 49 ms
34,560 KB |
testcase_04 | AC | 49 ms
34,560 KB |
testcase_05 | AC | 50 ms
34,560 KB |
testcase_06 | AC | 49 ms
34,560 KB |
testcase_07 | AC | 49 ms
34,560 KB |
testcase_08 | AC | 60 ms
36,992 KB |
testcase_09 | AC | 55 ms
35,200 KB |
testcase_10 | AC | 58 ms
36,352 KB |
testcase_11 | AC | 86 ms
36,480 KB |
testcase_12 | AC | 56 ms
36,480 KB |
testcase_13 | AC | 237 ms
59,968 KB |
testcase_14 | AC | 283 ms
62,156 KB |
testcase_15 | AC | 267 ms
64,172 KB |
testcase_16 | AC | 183 ms
55,044 KB |
testcase_17 | AC | 134 ms
50,904 KB |
testcase_18 | AC | 337 ms
71,104 KB |
testcase_19 | AC | 336 ms
70,984 KB |
testcase_20 | AC | 324 ms
71,116 KB |
testcase_21 | AC | 342 ms
71,004 KB |
testcase_22 | AC | 309 ms
70,980 KB |
testcase_23 | AC | 92 ms
43,968 KB |
testcase_24 | AC | 77 ms
40,724 KB |
testcase_25 | AC | 149 ms
54,396 KB |
testcase_26 | AC | 221 ms
64,260 KB |
testcase_27 | AC | 155 ms
56,076 KB |
testcase_28 | AC | 125 ms
49,096 KB |
testcase_29 | AC | 149 ms
54,684 KB |
testcase_30 | AC | 124 ms
49,548 KB |
testcase_31 | AC | 101 ms
45,456 KB |
testcase_32 | AC | 124 ms
52,272 KB |
testcase_33 | AC | 204 ms
61,460 KB |
testcase_34 | AC | 199 ms
60,120 KB |
testcase_35 | AC | 195 ms
59,296 KB |
testcase_36 | AC | 150 ms
50,608 KB |
testcase_37 | AC | 119 ms
49,092 KB |
testcase_38 | AC | 147 ms
53,336 KB |
testcase_39 | AC | 147 ms
53,476 KB |
testcase_40 | AC | 147 ms
53,296 KB |
testcase_41 | AC | 147 ms
53,308 KB |
testcase_42 | AC | 146 ms
53,188 KB |
testcase_43 | AC | 140 ms
75,460 KB |
testcase_44 | AC | 157 ms
52,820 KB |
testcase_45 | AC | 153 ms
70,408 KB |
testcase_46 | AC | 65 ms
48,280 KB |
testcase_47 | AC | 48 ms
34,432 KB |
ソースコード
#include <atcoder/all> #include <iostream> // cout, endl, cin #include <string> // string, to_string, stoi #include <vector> // vector #include <algorithm> // min, max, swap, sort, reverse, lower_bound, upper_bound #include <utility> // pair, make_pair #include <tuple> // tuple, make_tuple #include <cstdint> // int64_t, int*_t #include <cstdio> // printf #include <map> // map #include <queue> // queue, priority_queue #include <set> // set #include <stack> // stack #include <deque> // deque #include <unordered_map> // unordered_map #include <unordered_set> // unordered_set #include <bitset> // bitset #include <cctype> // isupper, islower, isdigit, toupper, tolower #include <math.h> #include <iomanip> #include <functional> using namespace std; using namespace atcoder; #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define repi(i, a, b) for (int i = (int)(a); i < (int)(b); i++) typedef long long ll; typedef unsigned long long ull; const ll inf=1e18; using graph = vector<vector<int> > ; using P= pair<ll,ll>; using vi=vector<int>; using vvi=vector<vi>; using vll=vector<ll>; using vvll=vector<vll>; using vp=vector<P>; using vpp=vector<vp>; using vd=vector<double>; using vvd =vector<vd>; //string T="ABCDEFGHIJKLMNOPQRSTUVWXYZ"; //string S="abcdefghijklmnopqrstuvwxyz"; //g++ main.cpp -std=c++17 -I . //cout <<setprecision(20); //cout << fixed << setprecision(10); //cin.tie(0); ios::sync_with_stdio(false); const double PI = acos(-1); int vx[]={0,1,0,-1,-1,1,1,-1},vy[]={1,0,-1,0,1,1,-1,-1}; ll pow_pow(ll x,ll n,ll mod){ if(n==0) return 1; x%=mod; ll res=pow_pow(x*x%mod,n/2,mod); if(n&1)res=res*x%mod; return res; } struct UnionFind { vector<int> par, siz; UnionFind(int n) : par(n, -1) , siz(n, 1) { } int root(int x) { if (par[x] == -1) return x; else return par[x] = root(par[x]); } bool issame(int x, int y) { return root(x) == root(y); } bool unite(int x, int y) { x = root(x), y = root(y); if (x == y) return false; if (siz[x] < siz[y]) swap(x, y); par[y] = x; siz[x] += siz[y]; return true; } int size(int x) { return siz[root(x)]; } }; ll gcd(ll x,ll y){ if(y==0)return x; return gcd(y,x%y); } ll lcm(ll x,ll y){ return ll(x/gcd(x,y))*y; } template<class T> bool chmin(T& a, T b) { if (a > b) { a = b; return true; } else return false; } template<class T> bool chmax(T& a, T b) { if (a < b) { a = b; return true; } else return false; } // https://youtu.be/L8grWxBlIZ4?t=9858 // https://youtu.be/ERZuLAxZffQ?t=4807 : optimize // https://youtu.be/8uowVvQ_-Mo?t=1329 : division const ll mod =1e9+7; struct mint { ll x; // typedef long long ll; mint(ll x=0):x((x%mod+mod)%mod){} mint operator-() const { return mint(-x);} mint& operator+=(const mint a) { if ((x += a.x) >= mod) x -= mod; return *this; } mint& operator-=(const mint a) { if ((x += mod-a.x) >= mod) x -= mod; return *this; } mint& operator*=(const mint a) { (x *= a.x) %= mod; return *this;} mint operator+(const mint a) const { return mint(*this) += a;} mint operator-(const mint a) const { return mint(*this) -= a;} mint operator*(const mint a) const { return mint(*this) *= a;} mint pow(ll t) const { if (!t) return 1; mint a = pow(t>>1); a *= a; if (t&1) a *= *this; return a; } // for prime mod mint inv() const { return pow(mod-2);} mint& operator/=(const mint a) { return *this *= a.inv();} mint operator/(const mint a) const { return mint(*this) /= a;} }; istream& operator>>(istream& is, const mint& a) { return is >> a.x;} ostream& operator<<(ostream& os, const mint& a) { return os << a.x;} // combination mod prime // https://www.youtube.com/watch?v=8uowVvQ_-Mo&feature=youtu.be&t=1619 struct combination { vector<mint> fact, ifact; combination(int n):fact(n+1),ifact(n+1) { //assert(n < mod); fact[0] = 1; for (int i = 1; i <= n; ++i) fact[i] = fact[i-1]*i; ifact[n] = fact[n].inv(); for (int i = n; i >= 1; --i) ifact[i-1] = ifact[i]*i; } mint operator()(int n, int k) { if (k < 0 || k > n) return 0; return fact[n]*ifact[k]*ifact[n-k]; } mint p(int n, int k) { return fact[n]*ifact[n-k]; } } c(2000005); using vm=vector<mint> ; using vvm=vector<vm> ; ll sqrt_(ll x) { ll l = 0, r = ll(3e9)+1; while (l+1<r) { ll c = (l+r)/2; if (c*c <= x) l = c; else r = c; } return l; } int valid(int x,int y,int h,int w){ if(x>=0 && y>=0 && x<h && y<w)return 1; else return 0; } ll comb[301][301]; void init_comb(int M){ comb[0][0]=1; for(int i=1; i<=300; i++){ for(int j=0; j<=i; j++){ if(j==0 || j==i)comb[i][j]=1; else comb[i][j]=(comb[i-1][j]+comb[i-1][j-1])%M; } } } ll nCk(int n,int k){ return comb[n][k]; } struct edge{ int to; ll cost; ll num; edge(int to,ll cost,ll num) : to(to),cost(cost),num(num) {} }; //snuke template<typename T> struct Matrix { int h, w; vector<vector<T> > d; Matrix() {} Matrix(int h, int w, T val=0): h(h), w(w), d(h, vector<T>(w,val)) {} Matrix& unit() { //assert(h == w); rep(i,h) d[i][i] = 1; return *this; } const vector<T>& operator[](int i) const { return d[i];} vector<T>& operator[](int i) { return d[i];} Matrix operator*(const Matrix& a) const { //assert(w == a.h); Matrix r(h, a.w); rep(i,h)rep(k,w)rep(j,a.w) { r[i][j] += d[i][k]*a[k][j]; } return r; } Matrix pow(ll t) const { // assert(h == w); if (!t) return Matrix(h,h).unit(); if (t == 1) return *this; Matrix r = pow(t>>1); r = r*r; if (t&1) r = r*(*this); return r; } }; //g++ main.cpp -std=c++17 -I . vector<vector<edge> > dfsg; vi seen; void dfs(int v,int p=-1){ for(auto u:dfsg[v]){ if(seen[u.to])continue; seen[u.to]=1; dfs(u.to,v); } } int main(){cin.tie(0);ios::sync_with_stdio(false); int n,m; cin >> n >> m; n++; vector<vector<edge> > g(n),g2(n); scc_graph sg(n); dfsg.resize(n); seen.resize(n);seen[n-1]=1; rep(i,m){ int u,v,l,a; cin >> u >> v >> l >> a; dfsg[v].push_back(edge(u,l,a)); continue; sg.add_edge(u,v); g[u].push_back(edge(v,l,a)); g2[v].push_back(edge(u,l,a)); } dfs(n-1); rep(v,n){ if(!seen[v])continue; for(auto u:dfsg[v]){ if(!seen[u.to])continue; sg.add_edge(u.to,v); g2[v].push_back(edge(u.to,u.cost,u.num)); g[u.to].push_back(edge(v,u.cost,u.num)); } } auto scc=sg.scc(); if(!seen[0]){ cout << 0 << endl; return 0; } if(scc.size()!=n){ cout << "INF" << endl; return 0; } vm dp(n),dp2(n); dp[n-1]=1; reverse(scc.begin(),scc.end()); for(auto vs:scc){ for(auto v:vs){ /// cout << v<< endl; for(auto u:g[v]){ dp[v]+=dp[u.to]*u.num; } } } mint ans=0; reverse(scc.begin(),scc.end()); dp2[0]=1; for(auto vs:scc){ for(auto v:vs){ for(auto u:g[v]){ dp2[u.to]+=dp2[v]*u.num; mint now=dp2[v]*dp[u.to]; now*=u.num; now*=u.cost; ans+=now; } } } cout << ans << endl; }