#603768 (C++17) No.1340 おーじ君をさがせ

• 問題: No.1340 おーじ君をさがせ
• ユーザー: hotman78
• 提出日時: 2021-01-15 21:34:50
• 言語: C++17 (gcc 12.3.0 + boost 1.83.0)
• 結果: AC
• 実行時間: 255 ms / 2,000 ms
• コード長: 6,653 bytes
• コンパイル時間: 3,136 ms
• コンパイル使用メモリ: 229,688 KB
• 実行使用メモリ: 5,376 KB
• 最終ジャッジ日時: 2024-05-05 21:43:02
• 合計ジャッジ時間: 7,839 ms
• ジャッジサーバーID （参考情報）: judge5 / judge3

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	2 ms; 5,248 KB
testcase_01	AC	2 ms; 5,248 KB
testcase_02	AC	1 ms; 5,376 KB
testcase_03	AC	2 ms; 5,376 KB
testcase_04	AC	1 ms; 5,376 KB
testcase_05	AC	2 ms; 5,376 KB
testcase_06	AC	1 ms; 5,376 KB
testcase_07	AC	2 ms; 5,376 KB
testcase_08	AC	2 ms; 5,376 KB
testcase_09	AC	2 ms; 5,376 KB
testcase_10	AC	2 ms; 5,376 KB
testcase_11	AC	48 ms; 5,376 KB
testcase_12	AC	9 ms; 5,376 KB
testcase_13	AC	36 ms; 5,376 KB
testcase_14	AC	101 ms; 5,376 KB
testcase_15	AC	83 ms; 5,376 KB
testcase_16	AC	8 ms; 5,376 KB
testcase_17	AC	28 ms; 5,376 KB
testcase_18	AC	48 ms; 5,376 KB
testcase_19	AC	4 ms; 5,376 KB
testcase_20	AC	2 ms; 5,376 KB
testcase_21	AC	53 ms; 5,376 KB
testcase_22	AC	129 ms; 5,376 KB
testcase_23	AC	50 ms; 5,376 KB
testcase_24	AC	244 ms; 5,376 KB
testcase_25	AC	8 ms; 5,376 KB
testcase_26	AC	6 ms; 5,376 KB
testcase_27	AC	4 ms; 5,376 KB
testcase_28	AC	10 ms; 5,376 KB
testcase_29	AC	3 ms; 5,376 KB
testcase_30	AC	55 ms; 5,376 KB
testcase_31	AC	250 ms; 5,376 KB
testcase_32	AC	236 ms; 5,376 KB
testcase_33	AC	228 ms; 5,376 KB
testcase_34	AC	204 ms; 5,376 KB
testcase_35	AC	255 ms; 5,376 KB
testcase_36	AC	2 ms; 5,376 KB
testcase_37	AC	2 ms; 5,376 KB
testcase_38	AC	245 ms; 5,376 KB
testcase_39	AC	64 ms; 5,376 KB
testcase_40	AC	65 ms; 5,376 KB
testcase_41	AC	65 ms; 5,376 KB
testcase_42	AC	2 ms; 5,376 KB
testcase_43	AC	2 ms; 5,376 KB
testcase_44	AC	1 ms; 5,376 KB
testcase_45	AC	2 ms; 5,376 KB
testcase_46	AC	48 ms; 5,376 KB
testcase_47	AC	51 ms; 5,376 KB
testcase_48	AC	60 ms; 5,376 KB
testcase_49	AC	60 ms; 5,376 KB
testcase_50	AC	59 ms; 5,376 KB
testcase_51	AC	58 ms; 5,376 KB
testcase_52	AC	108 ms; 5,376 KB
testcase_53	AC	107 ms; 5,376 KB
testcase_54	AC	111 ms; 5,376 KB
testcase_55	AC	82 ms; 5,376 KB
testcase_56	AC	2 ms; 5,376 KB
testcase_57	AC	2 ms; 5,376 KB
testcase_58	AC	2 ms; 5,376 KB
testcase_59	AC	33 ms; 5,376 KB
testcase_60	AC	2 ms; 5,376 KB
testcase_61	AC	35 ms; 5,376 KB

ソースコード

#line 2 "cpplib/util/template.hpp"
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("avx2")
#include<bits/stdc++.h>
using namespace std;
struct __INIT__{__INIT__(){cin.tie(0);ios::sync_with_stdio(false);cout<<fixed<<setprecision(15);}}__INIT__;
typedef long long lint;
#define INF (1LL<<60)
#define IINF (1<<30)
#define EPS (1e-10)
#define endl ('\n')
typedef vector<lint> vec;
typedef vector<vector<lint>> mat;
typedef vector<vector<vector<lint>>> mat3;
typedef vector<string> svec;
typedef vector<vector<string>> smat;
template<typename T>using V=vector<T>;
template<typename T>using VV=V<V<T>>;
template<typename T>inline void output(T t){bool f=0;for(auto i:t){cout<<(f?" ":"")<<i;f=1;}cout<<endl;}
template<typename T>inline void output2(T t){for(auto i:t)output(i);}
template<typename T>inline void debug(T t){bool f=0;for(auto i:t){cerr<<(f?" ":"")<<i;f=1;}cerr<<endl;}
template<typename T>inline void debug2(T t){for(auto i:t)output(i);}
#define loop(n) for(long long _=0;_<(long long)(n);++_)
#define _overload4(_1,_2,_3,_4,name,...) name
#define __rep(i,a) repi(i,0,a,1)
#define _rep(i,a,b) repi(i,a,b,1)
#define repi(i,a,b,c) for(long long i=(long long)(a);i<(long long)(b);i+=c)
#define rep(...) _overload4(__VA_ARGS__,repi,_rep,__rep)(__VA_ARGS__)
#define _overload3_rev(_1,_2,_3,name,...) name
#define _rep_rev(i,a) repi_rev(i,0,a)
#define repi_rev(i,a,b) for(long long i=(long long)(b)-1;i>=(long long)(a);--i)
#define rrep(...) _overload3_rev(__VA_ARGS__,repi_rev,_rep_rev)(__VA_ARGS__)

// #define rep(i,...) for(auto i:range(__VA_ARGS__)) 
// #define rrep(i,...) for(auto i:reversed(range(__VA_ARGS__)))
// #define repi(i,a,b) for(lint i=lint(a);i<(lint)(b);++i)
// #define rrepi(i,a,b) for(lint i=lint(b)-1;i>=lint(a);--i)
// #define irep(i) for(lint i=0;;++i)
// inline vector<long long> range(long long n){if(n<=0)return vector<long long>();vector<long long>v(n);iota(v.begin(),v.end(),0LL);return v;}
// inline vector<long long> range(long long a,long long b){if(b<=a)return vector<long long>();vector<long long>v(b-a);iota(v.begin(),v.end(),a);return v;}
// inline vector<long long> range(long long a,long long b,long long c){if((b-a+c-1)/c<=0)return vector<long long>();vector<long long>v((b-a+c-1)/c);for(int i=0;i<(int)v.size();++i)v[i]=i?v[i-1]+c:a;return v;}
// template<typename T>inline T reversed(T v){reverse(v.begin(),v.end());return v;}
#define all(n) begin(n),end(n)
template<typename T,typename E>bool chmin(T& s,const E& t){bool res=s>t;s=min<T>(s,t);return res;}
template<typename T,typename E>bool chmax(T& s,const E& t){bool res=s<t;s=max<T>(s,t);return res;}
const vector<lint> dx={1,0,-1,0,1,1,-1,-1};
const vector<lint> dy={0,1,0,-1,1,-1,1,-1};
#define SUM(v) accumulate(all(v),0LL)
template<typename T,typename ...Args>auto make_vector(T x,int arg,Args ...args){if constexpr(sizeof...(args)==0)return vector<T>(arg,x);else return vector(arg,make_vector<T>(x,args...));}
#define extrep(v,...) for(auto v:__MAKE_MAT__({__VA_ARGS__}))
#define bit(n,a) ((n>>a)&1)
vector<vector<long long>> __MAKE_MAT__(vector<long long> v){if(v.empty())return vector<vector<long long>>(1,vector<long long>());long long n=v.back();v.pop_back();vector<vector<long long>> ret;vector<vector<long long>> tmp=__MAKE_MAT__(v);for(auto e:tmp)for(long long i=0;i<n;++i){ret.push_back(e);ret.back().push_back(i);}return ret;}
using graph=vector<vector<int>>;
template<typename T>using graph_w=vector<vector<pair<int,T>>>;
template<typename T,typename E>ostream& operator<<(ostream& out,pair<T,E>v){out<<"("<<v.first<<","<<v.second<<")";return out;}
constexpr inline long long powll(long long a,long long b){long long res=1;while(b--)res*=a;return res;}
#line 3 "cpplib/alga/maybe.hpp"

/**
 * @brief Maybe
 * @see https://ja.wikipedia.org/wiki/%E3%83%A2%E3%83%8A%E3%83%89_(%E3%83%97%E3%83%AD%E3%82%B0%E3%83%A9%E3%83%9F%E3%83%B3%E3%82%B0)#Maybe%E3%83%A2%E3%83%8A%E3%83%89
 */

template<typename T>
struct maybe{
    bool _is_none;
    T val;
    maybe():_is_none(true){}
    maybe(T val):_is_none(false),val(val){}
    T unwrap()const{
        assert(!_is_none);
        return val;
    }
    T unwrap_or(T e)const{
        return _is_none?e:val;
    }
    bool is_none()const{return _is_none;}
    bool is_some()const{return !_is_none;}
};

template<typename T,typename F>
auto expand(F op){
    return [&op](const maybe<T>& s,const maybe<T>& t){
        if(s.is_none())return t;
        if(t.is_none())return s;
        return maybe<T>(op(s.unwrap(),t.unwrap()));
    };
}
#line 4 "cpplib/segment_tree/segment_tree.hpp"

/**
 * @brief セグメント木
 * @see https://en.wikipedia.org/wiki/Segment_tree
 */

template<typename T,typename F>
class segment_tree{
	maybe<T>* node;
    F op;
	int n=1;
	public:
    segment_tree(){}
	segment_tree(int sz,F op=F()):op(op){
		while(n<=sz)n<<=1;
		node=new maybe<T>[n*2];
		for(int i=0;i<n*2;i++)node[i]=maybe<T>();
	}
    segment_tree(const std::vector<T>&v,F op=F()):op(op){
        auto f=expand<T,F>(op);
        const int sz=v.size();
		while(n<=sz)n<<=1;
		node=new maybe<T>[n*2]();
        for(int i=0;i<sz;i++)node[i+n]=maybe<T>(v[i]);
        for(int i=n-1;i>=1;i--)node[i]=f(node[i*2],node[i*2+1]);
	}
    maybe<T> get(int l,int r){
        auto f=expand<T,F>(op);
        l+=n;r+=n;
        maybe<T> s,t;
        while(l<r){
            if(l&1)s=f(s,node[l++]);
            if(r&1)t=f(node[--r],t);
            l>>=1;r>>=1;
        }
        return f(s,t);
    }
    void apply(int t,T _val){
        auto f=expand<T,F>(op);
        t+=n;
        maybe<T> val=maybe<T>(_val);
        while(t){
            node[t]=f(node[t],val);
            t=t>>1;
        }
    }
    void apply_left(int t,T _val){
        auto f=expand<T,F>(op);
        t+=n;
        maybe<T> val=maybe<T>(_val);
        while(t){
            node[t]=f(val,node[t]);
            t=t>>1;
        }
    }
    void change(int t,T val){
        auto f=expand<T,F>(op);
        t+=n;
        node[t]=maybe<T>(val);
        while(t>1){
            t=t>>1;
            node[t]=f(node[t*2],node[t*2+1]);
        }
    }
};
#line 3 "code.cpp"
int main(){
    lint n,m,t;
    cin>>n>>m>>t;
    mat ans(n,vec(n,0));
    mat v(n,vec(n,0));
    ans[0][0]=1;
    rep(i,m){
        lint s,t;
        cin>>s>>t;
        v[s][t]=1;
    }
    auto mul=[&](const mat& s,const mat& t){
        mat res(n,vec(n,0));
        rep(i,n)rep(j,n)rep(k,n){
            res[i][k]|=s[i][j]&t[j][k];
        }
        return res;
    };
    while(t){
        if(t%2)ans=mul(ans,v);
        v=mul(v,v);
        t/=2;
    }
    lint ans2=0;
    rep(i,n){
        ans2+=ans[0][i];
    }
    cout<<ans2<<endl;
}