結果

問題 No.1344 Typical Shortest Path Sum
コンテスト
ユーザー rniya
提出日時 2021-01-16 13:36:45
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 7 ms / 2,000 ms
コード長 5,178 bytes
コンパイル時間 2,359 ms
コンパイル使用メモリ 204,148 KB
最終ジャッジ日時 2025-01-17 22:11:03
ジャッジサーバーID
（参考情報） 		judge2 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 77
権限があれば一括ダウンロードができます

ソースコード

diff # 

#include <bits/stdc++.h>
using namespace std;
const long long MOD=1000000007;
// const long long MOD=998244353;
#define LOCAL
#pragma region Macros
typedef long long ll;
typedef __int128_t i128;
typedef unsigned int uint;
typedef unsigned long long ull;
#define ALL(x) (x).begin(),(x).end()
const int INF=1e9;
const long long IINF=1e18;
const int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1};
const char dir[4]={'D','R','U','L'};

template<typename T>
istream &operator>>(istream &is,vector<T> &v){
    for (T &x:v) is >> x;
    return is;
}
template<typename T>
ostream &operator<<(ostream &os,const vector<T> &v){
    for (int i=0;i<v.size();++i){
        os << v[i] << (i+1==v.size()?"": " ");
    }
    return os;
}
template<typename T,typename U>
ostream &operator<<(ostream &os,const pair<T,U> &p){
    os << '(' << p.first << ',' << p.second << ')';
    return os;
}
template<typename T,typename U,typename V>
ostream&operator<<(ostream &os,const tuple<T,U,V> &t){
    os << '(' << get<0>(t) << ',' << get<1>(t) << ',' << get<2>(t) << ')';
    return os;
}
template<typename T,typename U,typename V,typename W>
ostream&operator<<(ostream &os,const tuple<T,U,V,W> &t){
    os << '(' << get<0>(t) << ',' << get<1>(t) << ',' << get<2>(t) << ',' << get<3>(t) << ')';
    return os;
}
template<typename T,typename U>
ostream &operator<<(ostream &os,const map<T,U> &m){
    os << '{';
    for (auto itr=m.begin();itr!=m.end();){
        os << '(' << itr->first << ',' << itr->second << ')';
        if (++itr!=m.end()) os << ',';
    }
    os << '}';
    return os;
}
template<typename T,typename U>
ostream &operator<<(ostream &os,const unordered_map<T,U> &m){
    os << '{';
    for (auto itr=m.begin();itr!=m.end();){
        os << '(' << itr->first << ',' << itr->second << ')';
        if (++itr!=m.end()) os << ',';
    }
    os << '}';
    return os;
}
template<typename T>
ostream &operator<<(ostream &os,const set<T> &s){
    os << '{';
    for (auto itr=s.begin();itr!=s.end();){
        os << *itr;
        if (++itr!=s.end()) os << ',';
    }
    os << '}';
    return os;
}
template<typename T>
ostream &operator<<(ostream &os,const multiset<T> &s){
    os << '{';
    for (auto itr=s.begin();itr!=s.end();){
        os << *itr;
        if (++itr!=s.end()) os << ',';
    }
    os << '}';
    return os;
}
template<typename T>
ostream &operator<<(ostream &os,const unordered_set<T> &s){
    os << '{';
    for (auto itr=s.begin();itr!=s.end();){
        os << *itr;
        if (++itr!=s.end()) os << ',';
    }
    os << '}';
    return os;
}
template<typename T>
ostream &operator<<(ostream &os,const deque<T> &v){
    for (int i=0;i<v.size();++i){
        os << v[i] << (i+1==v.size()?"": " ");
    }
    return os;
}

void debug_out(){cerr << '\n';}
template<class Head,class... Tail>
void debug_out(Head&& head,Tail&&... tail){
    cerr << head;
    if (sizeof...(Tail)>0) cerr << ", ";
    debug_out(move(tail)...);
}
#ifdef LOCAL
#define debug(...) cerr << " ";\
cerr << #__VA_ARGS__ << " :[" << __LINE__ << ":" << __FUNCTION__ << "]" << '\n';\
cerr << " ";\
debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif

template<typename T> T gcd(T x,T y){return y!=0?gcd(y,x%y):x;}
template<typename T> T lcm(T x,T y){return x/gcd(x,y)*y;}

template<class T1,class T2> inline bool chmin(T1 &a,T2 b){
    if (a>b){a=b; return true;} return false;
}
template<class T1,class T2> inline bool chmax(T1 &a,T2 b){
    if (a<b){a=b; return true;} return false;
}
#pragma endregion

template<typename T>
struct BellmanFord{
    const T inf=numeric_limits<T>::max();
    struct edge{
        int u,v; T w;
        edge(int u,int v,T w):u(u),v(v),w(w){}
    };
    int n;
    vector<vector<int>> G;
    vector<int> check,reach;
    vector<edge> es;
    BellmanFord(int n):n(n),G(n),check(n),reach(n,1){}
    void add_edge(int u,int v,T w){
        es.emplace_back(u,v,w);
        G[u].emplace_back(v);
    }
    vector<T> build(int s,int &neg_loop){
        vector<T> d(n,inf);
        d[s]=0;
        for (int i=0;i<n;++i){
            bool update=false;
            for (auto e:es){
                if (!reach[e.u]||!reach[e.v]||d[e.u]==inf) continue;
                if (d[e.u]+e.w<d[e.v]){
                    d[e.v]=d[e.u]+e.w;
                    update=true;
                }
            }
            if (!update) break;
            if (i==n-1){neg_loop=1; return d;}
        }
        neg_loop=0; return d;
    }
    void dfs(int v){
        if (check[v]) return;
        check[v]=1;
        for (int u:G[v]) dfs(u);
    }
    T shortest_path(int s,int t,int &neg_loop){
        for (int i=0;i<n;++i){
            fill(check.begin(),check.end(),0);
            dfs(i);
            reach[i]=check[t];
        }
        return build(s,neg_loop)[t];
    }
};

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    int N,M; cin >> N >> M;
    BellmanFord<ll> BF(N);
    for (;M--;){
        int s,t; ll d; cin >> s >> t >> d;
        BF.add_edge(--s,--t,d);
    }

    for (int i=0;i<N;++i){
        int flag;
        vector<ll> res=BF.build(i,flag);
        ll ans=0;
        for (int j=0;j<N;++j) ans+=(res[j]>IINF?0:res[j]);
        cout << ans << '\n';
    }
}
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