結果

問題 No.1473 おでぶなおばけさん
ユーザー t98slidert98slider
提出日時 2021-04-09 21:52:18
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 70 ms / 2,000 ms
コード長 5,846 bytes
コンパイル時間 1,919 ms
コンパイル使用メモリ 189,152 KB
実行使用メモリ 10,752 KB
最終ジャッジ日時 2024-06-25 05:09:20
合計ジャッジ時間 5,684 ms
ジャッジサーバーID
(参考情報)
judge5 / judge4
このコードへのチャレンジ
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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 2 ms
6,816 KB
testcase_01 AC 2 ms
6,944 KB
testcase_02 AC 66 ms
10,240 KB
testcase_03 AC 50 ms
8,704 KB
testcase_04 AC 35 ms
7,296 KB
testcase_05 AC 13 ms
6,944 KB
testcase_06 AC 56 ms
8,704 KB
testcase_07 AC 68 ms
10,752 KB
testcase_08 AC 70 ms
10,752 KB
testcase_09 AC 67 ms
10,752 KB
testcase_10 AC 42 ms
6,940 KB
testcase_11 AC 42 ms
6,944 KB
testcase_12 AC 40 ms
6,944 KB
testcase_13 AC 27 ms
6,944 KB
testcase_14 AC 20 ms
6,944 KB
testcase_15 AC 37 ms
6,944 KB
testcase_16 AC 40 ms
6,940 KB
testcase_17 AC 4 ms
6,940 KB
testcase_18 AC 6 ms
6,940 KB
testcase_19 AC 34 ms
6,944 KB
testcase_20 AC 45 ms
8,064 KB
testcase_21 AC 53 ms
6,940 KB
testcase_22 AC 62 ms
9,088 KB
testcase_23 AC 51 ms
8,832 KB
testcase_24 AC 50 ms
8,192 KB
testcase_25 AC 64 ms
8,832 KB
testcase_26 AC 64 ms
8,704 KB
testcase_27 AC 26 ms
6,940 KB
testcase_28 AC 68 ms
10,624 KB
testcase_29 AC 47 ms
6,940 KB
testcase_30 AC 54 ms
7,040 KB
testcase_31 AC 58 ms
10,496 KB
testcase_32 AC 49 ms
8,832 KB
testcase_33 AC 40 ms
7,808 KB
testcase_34 AC 23 ms
6,940 KB
testcase_35 AC 24 ms
6,944 KB
testcase_36 AC 51 ms
6,944 KB
testcase_37 AC 48 ms
8,448 KB
testcase_38 AC 11 ms
6,944 KB
testcase_39 AC 41 ms
6,940 KB
testcase_40 AC 41 ms
6,940 KB
testcase_41 AC 38 ms
6,944 KB
testcase_42 AC 38 ms
6,940 KB
testcase_43 AC 44 ms
8,064 KB
testcase_44 AC 44 ms
8,064 KB
testcase_45 AC 44 ms
8,192 KB
testcase_46 AC 49 ms
7,936 KB
testcase_47 AC 58 ms
8,832 KB
testcase_48 AC 52 ms
8,576 KB
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>
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define drep(i,j,n) for(int i=0;i<(int)(n-1);i++)for(int j=i+1;j<(int)(n);j++)
#define trep(i,j,k,n) for(int i=0;i<(int)(n-2);i++)for(int j=i+1;j<(int)(n-1);j++)for(int k=j+1;k<(int)(n);k++)
#define codefor int test;scanf("%d",&test);while(test--)
#define INT(...) int __VA_ARGS__;in(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__;in(__VA_ARGS__)
#define yes(ans) if(ans)printf("yes\n");else printf("no\n")
#define Yes(ans) if(ans)printf("Yes\n");else printf("No\n")
#define YES(ans) if(ans)printf("YES\n");else printf("NO\n")
#define popcount(v) __builtin_popcount(v)
#define vector2d(type,name,h,...) vector<vector<type>>name(h,vector<type>(__VA_ARGS__))
#define vector3d(type,name,h,w,...) vector<vector<vector<type>>>name(h,vector<vector<type>>(w,vector<type>(__VA_ARGS__)))
#define umap unordered_map
#define uset unordered_set
using namespace std;
using ll = long long;
const int MOD=1000000007;
const int MOD2=998244353;
const int INF=1<<30;
const ll INF2=(ll)1<<60;
//入力系
void scan(int& a){scanf("%d",&a);}
void scan(long long& a){scanf("%lld",&a);}
template<class T,class L>void scan(pair<T, L>& p){scan(p.first);scan(p.second);}
template<class T,class U,class V>void scan(tuple<T,U,V>& p){scan(get<0>(p));scan(get<1>(p));scan(get<2>(p));}
template<class T> void scan(T& a){cin>>a;}
template<class T> void scan(vector<T>& vec){for(auto&& it:vec)scan(it);}
void in(){}
template <class Head, class... Tail> void in(Head& head, Tail&... tail){scan(head);in(tail...);}
//出力系
void print(const int& a){printf("%d",a);}
void print(const long long& a){printf("%lld",a);}
void print(const double& a){printf("%.15lf",a);}
template<class T,class L>void print(const pair<T, L>& p){print(p.first);putchar(' ');print(p.second);}
template<class T> void print(const T& a){cout<<a;}
template<class T> void print(const vector<T>& vec){if(vec.empty())return;print(vec[0]);for(auto it=vec.begin();++it!= vec.end();){putchar(' ');print(*it);}}
void out(){putchar('\n');}
template<class T> void out(const T& t){print(t);putchar('\n');}
template <class Head, class... Tail> void out(const Head& head,const Tail&... tail){print(head);putchar(' ');out(tail...);}
//デバッグ系
template<class T> void dprint(const T& a){cerr<<a;}
template<class T> void dprint(const vector<T>& vec){if(vec.empty())return;cerr<<vec[0];for(auto it=vec.begin();++it!= vec.end();){cerr<<" "<<*it;}}
void debug(){cerr<<endl;}
template<class T> void debug(const T& t){dprint(t);cerr<<endl;}
template <class Head, class... Tail> void debug(const Head& head, const Tail&... tail){dprint(head);cerr<<" ";debug(tail...);}
ll intpow(ll a, ll b){ ll ans = 1; while(b){ if(b & 1) ans *= a; a *= a; b /= 2; } return ans; }
ll modpow(ll a, ll b, ll p){ ll ans = 1; while(b){ if(b & 1) (ans *= a) %= p; (a *= a) %= p; b /= 2; } return ans; }
ll modinv(ll a, ll m) {ll b = m, u = 1, v = 0;while (b) {ll t = a / b;a -= t * b; swap(a, b);u -= t * v; swap(u, v);}u %= m;if (u < 0) u += m;return u;}
ll updivide(ll a,ll b){if(a%b==0) return a/b;else return (a/b)+1;}
template<class T> void chmax(T &a,const T b){if(b>a)a=b;}
template<class T> void chmin(T &a,const T b){if(b<a)a=b;}

struct dsu {
  public:
    dsu() : _n(0) {}
    dsu(int n) : _n(n), parent_or_size(n, -1) {}

    int merge(int a, int b) {
        assert(0 <= a && a < _n);
        assert(0 <= b && b < _n);
        int x = leader(a), y = leader(b);
        if (x == y) return x;
        if (-parent_or_size[x] < -parent_or_size[y]) std::swap(x, y);
        parent_or_size[x] += parent_or_size[y];
        parent_or_size[y] = x;
        return x;
    }

    bool same(int a, int b) {
        assert(0 <= a && a < _n);
        assert(0 <= b && b < _n);
        return leader(a) == leader(b);
    }

    int leader(int a) {
        assert(0 <= a && a < _n);
        if (parent_or_size[a] < 0) return a;
        return parent_or_size[a] = leader(parent_or_size[a]);
    }

    int size(int a) {
        assert(0 <= a && a < _n);
        return -parent_or_size[leader(a)];
    }

    std::vector<std::vector<int>> groups() {
        std::vector<int> leader_buf(_n), group_size(_n);
        for (int i = 0; i < _n; i++) {
            leader_buf[i] = leader(i);
            group_size[leader_buf[i]]++;
        }
        std::vector<std::vector<int>> result(_n);
        for (int i = 0; i < _n; i++) {
            result[i].reserve(group_size[i]);
        }
        for (int i = 0; i < _n; i++) {
            result[leader_buf[i]].push_back(i);
        }
        result.erase(
            std::remove_if(result.begin(), result.end(),
                           [&](const std::vector<int>& v) { return v.empty(); }),
            result.end());
        return result;
    }

  private:
    int _n;
    std::vector<int> parent_or_size;
};

int main(){
    INT(n,m);
    dsu uf(n);
    vector<vector<int>> graph(n);
    vector<tuple<int,int,int>> edge(m);
    rep(i,m){
        in(get<1>(edge[i]),get<2>(edge[i]),get<0>(edge[i]));
    }
    sort(rall(edge));
    int ans=-1;
    rep(i,m){
        if(get<0>(edge[i])<ans)break;
        graph[--get<2>(edge[i])].push_back(--get<1>(edge[i]));
        graph[get<1>(edge[i])].push_back(get<2>(edge[i]));
        uf.merge(get<2>(edge[i]),get<1>(edge[i]));
        if(uf.same(0,n-1)){
            ans=get<0>(edge[i]);
        }
    }
    queue<int> next;
    next.push(0);
    vector<int> dist(n,INF);
    dist[0]=0;
    while(!next.empty()){
        rep(j,graph[next.front()].size()){
            if(dist[next.front()]+1<dist[graph[next.front()][j]]){
                dist[graph[next.front()][j]]=dist[next.front()]+1;
                next.push(graph[next.front()][j]);
            }
        }
        next.pop();
    }
    out(ans,dist[n-1]);
}
0