結果
問題 | No.1244 Black Segment |
ユーザー | 👑 tute7627 |
提出日時 | 2020-09-27 15:53:31 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 55 ms / 2,000 ms |
コード長 | 3,217 bytes |
コンパイル時間 | 2,436 ms |
コンパイル使用メモリ | 213,572 KB |
実行使用メモリ | 12,612 KB |
最終ジャッジ日時 | 2024-06-30 12:39:52 |
合計ジャッジ時間 | 5,072 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | 3 ms
6,816 KB |
testcase_01 | AC | 3 ms
6,944 KB |
testcase_02 | AC | 3 ms
6,944 KB |
testcase_03 | AC | 3 ms
6,940 KB |
testcase_04 | AC | 3 ms
6,940 KB |
testcase_05 | AC | 3 ms
6,940 KB |
testcase_06 | AC | 4 ms
6,940 KB |
testcase_07 | AC | 3 ms
6,940 KB |
testcase_08 | AC | 3 ms
6,940 KB |
testcase_09 | AC | 3 ms
6,940 KB |
testcase_10 | AC | 3 ms
6,940 KB |
testcase_11 | AC | 3 ms
6,940 KB |
testcase_12 | AC | 4 ms
6,944 KB |
testcase_13 | AC | 4 ms
6,944 KB |
testcase_14 | AC | 27 ms
9,344 KB |
testcase_15 | AC | 4 ms
6,940 KB |
testcase_16 | AC | 26 ms
8,672 KB |
testcase_17 | AC | 4 ms
6,944 KB |
testcase_18 | AC | 26 ms
9,540 KB |
testcase_19 | AC | 40 ms
10,708 KB |
testcase_20 | AC | 42 ms
10,368 KB |
testcase_21 | AC | 39 ms
10,240 KB |
testcase_22 | AC | 50 ms
10,112 KB |
testcase_23 | AC | 51 ms
11,136 KB |
testcase_24 | AC | 45 ms
10,624 KB |
testcase_25 | AC | 48 ms
10,496 KB |
testcase_26 | AC | 44 ms
10,624 KB |
testcase_27 | AC | 46 ms
10,240 KB |
testcase_28 | AC | 45 ms
11,008 KB |
testcase_29 | AC | 52 ms
10,624 KB |
testcase_30 | AC | 45 ms
10,880 KB |
testcase_31 | AC | 51 ms
10,240 KB |
testcase_32 | AC | 55 ms
10,368 KB |
testcase_33 | AC | 48 ms
10,240 KB |
testcase_34 | AC | 40 ms
11,732 KB |
testcase_35 | AC | 39 ms
11,832 KB |
testcase_36 | AC | 45 ms
11,356 KB |
testcase_37 | AC | 49 ms
12,612 KB |
testcase_38 | AC | 42 ms
12,156 KB |
ソースコード
//#define _GLIBCXX_DEBUG #include<bits/stdc++.h> using namespace std; #define endl '\n' #define lfs cout<<fixed<<setprecision(10) #define ALL(a) (a).begin(),(a).end() #define ALLR(a) (a).rbegin(),(a).rend() #define spa << " " << #define fi first #define se second #define MP make_pair #define MT make_tuple #define PB push_back #define EB emplace_back #define rep(i,n,m) for(ll i = (n); i < (ll)(m); i++) #define rrep(i,n,m) for(ll i = (ll)(m) - 1; i >= (ll)(n); i--) using ll = long long; using ld = long double; const ll MOD1 = 1e9+7; const ll MOD9 = 998244353; const ll INF = 1e18; using P = pair<ll, ll>; template<typename T1, typename T2>bool chmin(T1 &a,T2 b){if(a>b){a=b;return true;}else return false;} template<typename T1, typename T2>bool chmax(T1 &a,T2 b){if(a<b){a=b;return true;}else return false;} ll median(ll a,ll b, ll c){return a+b+c-max({a,b,c})-min({a,b,c});} void ans1(bool x){if(x) cout<<"Yes"<<endl;else cout<<"No"<<endl;} void ans2(bool x){if(x) cout<<"YES"<<endl;else cout<<"NO"<<endl;} void ans3(bool x){if(x) cout<<"Yay!"<<endl;else cout<<":("<<endl;} template<typename T1,typename T2>void ans(bool x,T1 y,T2 z){if(x)cout<<y<<endl;else cout<<z<<endl;} template<typename T>void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++){cout<<v[i][0];for(ll j=1;j<w;j++)cout spa v[i][j];cout<<endl;}}; void debug(vector<string>&v,ll h,ll w){for(ll i=0;i<h;i++){for(ll j=0;j<w;j++)cout<<v[i][j];cout<<endl;}}; template<typename T>void debug(vector<T>&v,ll n){if(n!=0)cout<<v[0];for(ll i=1;i<n;i++)cout spa v[i];cout<<endl;}; template<typename T>vector<vector<T>>vec(ll x, ll y, T w){vector<vector<T>>v(x,vector<T>(y,w));return v;} ll gcd(ll x,ll y){ll r;while(y!=0&&(r=x%y)!=0){x=y;y=r;}return y==0?x:y;} vector<ll>dx={1,-1,0,0,1,1,-1,-1};vector<ll>dy={0,0,1,-1,1,-1,1,-1}; template<typename T>vector<T> make_v(size_t a,T b){return vector<T>(a,b);} template<typename... Ts>auto make_v(size_t a,Ts... ts){return vector<decltype(make_v(ts...))>(a,make_v(ts...));} template<typename T1, typename T2>ostream &operator<<(ostream &os, const pair<T1, T2>&p){return os << p.first << " " << p.second;} template<typename T>ostream &operator<<(ostream &os, const vector<T> &v){for(auto &z:v)os << z << " ";cout<<"|"; return os;} //mt19937 mt(chrono::steady_clock::now().time_since_epoch().count()); vector<ll>dist(200001); void bfs(ll k,vector<vector<ll>>&g){ queue<P> q; ll n=g.size(); q.emplace(k,0); fill(dist.begin(),dist.begin()+n,INF); while(!q.empty()){ ll x=q.front().fi; ll len=q.front().se; if(dist[x]==INF){ dist[x]=len; for(ll i=0;i<g[x].size();i++){ q.emplace(g[x][i],len+1); } } q.pop(); } } int main(){ cin.tie(nullptr); ios_base::sync_with_stdio(false); ll res=0,buf=0; bool judge = true; ll n,m,a,b;cin>>n>>m>>a>>b; assert(n>=1&&n<=(ll)1e5); assert(m>=1&&m<=(ll)1e5); assert(a>=1&&a<=n); assert(b>=1&&b<=n); assert(a<=b); a--;b--; vector<vector<ll>>g(n+1); rep(i,0,m){ ll u,v;cin>>u>>v; assert(u>=1&&u<=n); assert(v>=1&&v<=n); assert(u<=v); u--; chmax(u,a); chmin(v,b+1); g[u].PB(v); g[v].PB(u); } bfs(a,g); ans(dist[b+1]==INF,-1,dist[b+1]); return 0; }