結果
問題 | No.1340 おーじ君をさがせ |
ユーザー |
|
提出日時 | 2021-01-15 22:17:39 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 82 ms / 2,000 ms |
コード長 | 4,817 bytes |
コンパイル時間 | 2,757 ms |
コンパイル使用メモリ | 202,784 KB |
最終ジャッジ日時 | 2025-01-17 19:38:28 |
ジャッジサーバーID (参考情報) |
judge1 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 59 |
ソースコード
//@formatter:off#include<bits/stdc++.h>#define overload4(_1,_2,_3,_4,name,...) name#define rep1(i,n) for (ll i = 0; i < ll(n); ++i)#define rep2(i,s,n) for (ll i = ll(s); i < ll(n); ++i)#define rep3(i,s,n,d) for(ll i = ll(s); i < ll(n); i+=d)#define rep(...) overload4(__VA_ARGS__,rep3,rep2,rep1)(__VA_ARGS__)#define rrep(i,n) for (ll i = ll(n)-1; i >= 0; i--)#define all(a) a.begin(),a.end()#define rall(a) a.rbegin(),a.rend()#define pb push_back#define eb emplace_back#define vi vector<int>#define vvi vector<vector<int>>#define vl vector<ll>#define vvl vector<vector<ll>>#define vd vector<double>#define vvd vector<vector<double>>#define vs vector<string>#define vc vector<char>#define vvc vector<vector<char>>#define vb vector<bool>#define vvb vector<vector<bool>>#define vp vector<P>#define vvp vector<vector<P>>#ifdef __LOCAL#define debug(...) { cout << #__VA_ARGS__; cout << ": "; print(__VA_ARGS__); cout << flush; }#else#define debug(...) void(0)#endif#define INT(...) int __VA_ARGS__;scan(__VA_ARGS__)#define LL(...) ll __VA_ARGS__;scan(__VA_ARGS__)#define STR(...) string __VA_ARGS__;scan(__VA_ARGS__)#define CHR(...) char __VA_ARGS__;scan(__VA_ARGS__)#define DBL(...) double __VA_ARGS__;scan(__VA_ARGS__)#define LD(...) ld __VA_ARGS__;scan(__VA_ARGS__)using namespace std;using ll = long long;using P = pair<int,int>;using LP = pair<ll,ll>;template<class S,class T> istream& operator>>(istream &is,pair<S,T> &p) { return is >> p.first >> p.second; }template<class S,class T> ostream& operator<<(ostream &os,const pair<S,T> &p) { return os<<'{'<<p.first<<","<<p.second<<'}'; }template<class T> istream& operator>>(istream &is,vector<T> &v) { for(T &t:v){is>>t;} return is; }template<class T> ostream& operator<<(ostream &os,const vector<T> &v) { os<<'[';rep(i,v.size())os<<v[i]<<(i==int(v.size()-1)?"":","); return os<<']';}void Yes(bool b) { cout << (b ? "Yes" : "No") << '\n'; }void YES(bool b) { cout << (b ? "YES" : "NO") << '\n'; }template<class T> void fin(T a) { cout << a << '\n'; exit(0); }template<class T> bool chmin(T& a,T b) {if(a > b){a = b; return true;} return false;}template<class T> bool chmax(T& a,T b) {if(a < b){a = b; return true;} return false;}void scan(){}template <class Head, class... Tail> void scan(Head& head, Tail&... tail){ cin >> head; scan(tail...); }template<class T> void print(const T& t){ cout << t << '\n'; }template <class Head, class... Tail> void print(const Head& head, const Tail&... tail){ cout<<head<<' '; print(tail...); }const int inf = 1001001001;const ll linf = 1001001001001001001;//@formatter:ontemplate<typename T>struct matrix {int h, w;vector<vector<T>> v;constexpr matrix(int h, int w, T t) : h(h), w(w), v(vector<vector<T>>(h, vector<T>(w, t))) {}constexpr matrix(vector<vector<T>> v) : v(v), h(v.size()), w(v[0].size()) {}constexpr matrix &operator+=(const matrix &a) {rep(i, h) rep(j, w) v[i][j] += a.v[i][j];return *this;}constexpr matrix &operator*=(const int &k) {rep(i, h) rep(j, w) v[i][j] *= k;return *this;}constexpr matrix &operator-=(const matrix &a) {*this += a * (-1);return *this;}constexpr matrix operator+(const matrix &a) const { return res(*this) += a; }constexpr matrix operator*(const int &k) const { return res(*this) *= k; }constexpr matrix operator-(const matrix &a) const { return res(*this) -= a; }constexpr matrix operator*(const matrix &a) const {matrix res(h, a.w, 0);rep(i, h) rep(j, a.h) rep(k, a.w) res.v[i][k] = res.v[i][k] + v[i][j] * a.v[j][k];return res;}constexpr matrix &operator*=(const matrix &a) { return *this = *this * a; }constexpr matrix pow(ll t) const {matrix res(h, w, 0), a(*this);rep(i, h) res.v[i][i] = T(1);while (t > 0) {if (t & 1) res *= a;t >>= 1;a *= a;}return res;}vector<T> &operator[](int i) {assert(i < h);return v[i];}};struct f2 {int x;f2(int x = 0) : x(x) {}};f2 operator*(const f2 &a, const f2 &b) {return f2(a.x & b.x);}f2 operator+(const f2 &a, const f2 &b) {return f2(a.x | b.x);}int main() {ios::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);INT(n, m);LL(t);vector init(n, vector(1, f2()));init[0][0].x = 1;auto init_m = matrix<f2>(init);vector trans(n, vector(n, f2()));rep(_, m) {INT(a, b);trans[b][a] = 1;}auto trans_m = matrix<f2>(trans);auto ans = trans_m.pow(t) * init_m;int cnt = 0;rep(i, n) cnt += ans.v[i][0].x;print(cnt);}