結果
問題 | No.1254 補強への架け橋 |
ユーザー | penguinman |
提出日時 | 2020-10-09 22:34:19 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 377 ms / 2,000 ms |
コード長 | 11,970 bytes |
コンパイル時間 | 2,563 ms |
コンパイル使用メモリ | 205,660 KB |
実行使用メモリ | 55,080 KB |
最終ジャッジ日時 | 2024-07-20 12:56:30 |
合計ジャッジ時間 | 15,726 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 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 | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 2 ms
5,376 KB |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 2 ms
5,376 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 2 ms
5,376 KB |
testcase_29 | AC | 2 ms
5,376 KB |
testcase_30 | AC | 2 ms
5,376 KB |
testcase_31 | AC | 2 ms
5,376 KB |
testcase_32 | AC | 2 ms
5,376 KB |
testcase_33 | AC | 2 ms
5,376 KB |
testcase_34 | AC | 2 ms
5,376 KB |
testcase_35 | AC | 2 ms
5,376 KB |
testcase_36 | AC | 2 ms
5,376 KB |
testcase_37 | AC | 2 ms
5,376 KB |
testcase_38 | AC | 2 ms
5,376 KB |
testcase_39 | AC | 2 ms
5,376 KB |
testcase_40 | AC | 2 ms
5,376 KB |
testcase_41 | AC | 2 ms
5,376 KB |
testcase_42 | AC | 2 ms
5,376 KB |
testcase_43 | AC | 3 ms
5,376 KB |
testcase_44 | AC | 2 ms
5,376 KB |
testcase_45 | AC | 3 ms
5,376 KB |
testcase_46 | AC | 2 ms
5,376 KB |
testcase_47 | AC | 2 ms
5,376 KB |
testcase_48 | AC | 2 ms
5,376 KB |
testcase_49 | AC | 2 ms
5,376 KB |
testcase_50 | AC | 3 ms
5,376 KB |
testcase_51 | AC | 3 ms
5,376 KB |
testcase_52 | AC | 3 ms
5,376 KB |
testcase_53 | AC | 3 ms
5,376 KB |
testcase_54 | AC | 3 ms
5,376 KB |
testcase_55 | AC | 3 ms
5,376 KB |
testcase_56 | AC | 2 ms
5,376 KB |
testcase_57 | AC | 3 ms
5,376 KB |
testcase_58 | AC | 2 ms
5,376 KB |
testcase_59 | AC | 2 ms
5,376 KB |
testcase_60 | AC | 2 ms
5,376 KB |
testcase_61 | AC | 3 ms
5,376 KB |
testcase_62 | AC | 2 ms
5,376 KB |
testcase_63 | AC | 12 ms
7,424 KB |
testcase_64 | AC | 4 ms
5,376 KB |
testcase_65 | AC | 8 ms
5,888 KB |
testcase_66 | AC | 7 ms
5,504 KB |
testcase_67 | AC | 4 ms
5,376 KB |
testcase_68 | AC | 8 ms
5,760 KB |
testcase_69 | AC | 9 ms
6,272 KB |
testcase_70 | AC | 5 ms
5,376 KB |
testcase_71 | AC | 4 ms
5,376 KB |
testcase_72 | AC | 9 ms
6,400 KB |
testcase_73 | AC | 5 ms
5,376 KB |
testcase_74 | AC | 8 ms
6,272 KB |
testcase_75 | AC | 7 ms
5,632 KB |
testcase_76 | AC | 3 ms
5,376 KB |
testcase_77 | AC | 7 ms
5,376 KB |
testcase_78 | AC | 11 ms
7,040 KB |
testcase_79 | AC | 11 ms
7,168 KB |
testcase_80 | AC | 10 ms
6,784 KB |
testcase_81 | AC | 11 ms
7,168 KB |
testcase_82 | AC | 10 ms
6,912 KB |
testcase_83 | AC | 159 ms
44,416 KB |
testcase_84 | AC | 156 ms
43,264 KB |
testcase_85 | AC | 83 ms
28,160 KB |
testcase_86 | AC | 125 ms
37,888 KB |
testcase_87 | AC | 147 ms
41,088 KB |
testcase_88 | AC | 17 ms
9,344 KB |
testcase_89 | AC | 160 ms
44,032 KB |
testcase_90 | AC | 86 ms
29,568 KB |
testcase_91 | AC | 63 ms
24,192 KB |
testcase_92 | AC | 31 ms
14,336 KB |
testcase_93 | AC | 116 ms
35,968 KB |
testcase_94 | AC | 104 ms
32,896 KB |
testcase_95 | AC | 97 ms
33,024 KB |
testcase_96 | AC | 144 ms
41,984 KB |
testcase_97 | AC | 53 ms
20,992 KB |
testcase_98 | AC | 145 ms
42,240 KB |
testcase_99 | AC | 78 ms
27,264 KB |
testcase_100 | AC | 165 ms
45,184 KB |
testcase_101 | AC | 27 ms
13,184 KB |
testcase_102 | AC | 14 ms
8,448 KB |
testcase_103 | AC | 30 ms
14,336 KB |
testcase_104 | AC | 45 ms
18,432 KB |
testcase_105 | AC | 112 ms
36,224 KB |
testcase_106 | AC | 59 ms
22,656 KB |
testcase_107 | AC | 166 ms
44,032 KB |
testcase_108 | AC | 146 ms
43,488 KB |
testcase_109 | AC | 116 ms
35,712 KB |
testcase_110 | AC | 99 ms
32,640 KB |
testcase_111 | AC | 110 ms
34,688 KB |
testcase_112 | AC | 41 ms
17,664 KB |
testcase_113 | AC | 100 ms
31,872 KB |
testcase_114 | AC | 58 ms
22,144 KB |
testcase_115 | AC | 18 ms
9,984 KB |
testcase_116 | AC | 71 ms
25,216 KB |
testcase_117 | AC | 41 ms
17,536 KB |
testcase_118 | AC | 150 ms
41,600 KB |
testcase_119 | AC | 75 ms
27,008 KB |
testcase_120 | AC | 136 ms
40,576 KB |
testcase_121 | AC | 36 ms
15,616 KB |
testcase_122 | AC | 66 ms
24,576 KB |
testcase_123 | AC | 2 ms
5,376 KB |
testcase_124 | AC | 377 ms
55,080 KB |
testcase_125 | AC | 375 ms
55,080 KB |
コンパイルメッセージ
main.cpp: In function 'int main()': main.cpp:452:20: warning: 'y' may be used uninitialized [-Wmaybe-uninitialized] 452 | while(x!=Z){ | ~^~~ main.cpp:424:10: note: 'y' was declared here 424 | ll x,y; | ^ main.cpp:445:20: warning: 'x' may be used uninitialized [-Wmaybe-uninitialized] 445 | while(x!=Z){ | ~^~~ main.cpp:424:8: note: 'x' was declared here 424 | ll x,y; | ^
ソースコード
#include<bits/stdc++.h> //using namespace std; #pragma GCC target("avx") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") #define rep(i,j,n) for(ll i=(ll)(j);i<(ll)(n);i++) #define REP(i,j,n) for(ll i=(ll)(j);i<=(ll)(n);i++) #define per(i,j,n) for(ll i=(ll)(j);(ll)(n)<=i;i--) #define ll long long #define ALL(a) (a).begin(),(a).end() #define disup(A,key) distance(A.begin(),upper_bound(ALL(A),(ll)(key))) #define dislow(A,key) distance(A.begin(),lower_bound(ALL(A),(ll)(key))) #define pb emplace_back #define mp std::make_pair // #define endl "\n" //using std::endl; using std::cin; using std::cout; using std::vector; using std::string; using std::upper_bound; using std::lower_bound; using vi=vector<ll>; using vii=vector<vi>; using pii=std::pair<ll,ll>; // constexpr ll MOD=1e9+7; //constexpr ll MOD=998244353; //constexpr ll MOD=10000000; //constexpr ll MOD=1e4; //constexpr ll MOD=1e5; constexpr ll MAX=3e6; constexpr ll inf=(1ll<<60); template<class T> class prique :public std::priority_queue<T, std::vector<T>, std::greater<T>> {}; template<typename T> struct Segment_tree{ ll N; T mem; vector<T> node; Segment_tree(vector<T> &X,T m):mem(m){ ll sz=X.size(); N=1; while(N<sz) N*=2; node.resize(2*N-1,mem); rep(i,0,sz) node[N-1+i]=X[i]; per(i,N-2,0){ node[i]=Compare(node[i*2+1],node[i*2+2]); } } T Compare(T &A,T &B){ return A+B; } void update(ll X,T val){ X+=N-1; node[X]=val; while(X>0){ X=(X-1)/2; node[X]=Compare(node[X*2+1],node[X*2+2]); } } T Query(ll a,ll b,ll now=0,ll l=0,ll r=-1){ //[a,b),[l,r) if(r<0) r=N; if(r<=a||b<=l) return mem; if(a<=l&&r<=b) return node[now]; auto vl=Query(a,b,now*2+1,l,(l+r)/2),vr=Query(a,b,now*2+2,(l+r)/2,r); return Compare(vl,vr); } ll lower_bound(ll left,ll right,T val,ll now=0,ll l=0,ll r=-1){ if(r<0) r=N; if(node[now]<val||l>=right||left>=r) return r; else if(now>=N-1) return l; ll vl=lower_bound(left,right,val,now*2+1,l,(l+r)/2); if(vl==(l+r)/2) return lower_bound(left,right,val,now*2+2,(l+r)/2,r); return vl; } }; template<typename T> struct lazy_Segment_tree{ int N; vector<T> node,lazy; T INF; vector<bool> flag; lazy_Segment_tree(vector<T> X,T Y):INF(Y){ N=1; while(X.size()>N) N*=2; node.resize(2*N-1,Y); lazy.resize(2*N-1); flag.resize(2*N-1); rep(i,0,X.size()) node[i+N-1]=X[i]; per(i,N-2,0) node[i]=compare(node[i*2+1],node[i*2+2]); } T compare(T X,T Y){ return std::max(X,Y); } T plus(T X,int l,int r){ return X; } void eval(int now,int l,int r){ if(flag[now]){ if(r-l>1){ flag[now*2+1]=flag[now*2+2]=1; lazy[now*2+1]=lazy[now*2+2]=lazy[now]; } node[now]=lazy[now]; flag[now]=0; } } void update(int a,int b,T add,int now=0,int l=0,int r=-1){ if(r<0) r=N; eval(now,l,r); if(b<=l||r<=a) return; if(a<=l&&r<=b){ lazy[now]=add; flag[now]=1; eval(now,l,r); } else{ update(a,b,add,now*2+1,l,(r+l)/2); update(a,b,add,now*2+2,(r+l)/2,r); node[now]=compare(node[now*2+1],node[now*2+2]); } } T Query(int a,int b,int now=0,int l=0,int r=-1){ if(r<0) r=N; eval(now,l,r); if(b<=l||r<=a) return INF; if(a<=l&&r<=b) return node[now]; return compare(Query(a,b,now*2+1,l,(r+l)/2),Query(a,b,now*2+2,(r+l)/2,r)); } ll lower_bound(ll left,ll right,T val,ll now=0,ll l=0,ll r=-1){ eval(now,l,r); if(r<0) r=N; if(node[now]<val||l>=right||left>=r) return r; else if(now>=N-1) return l; ll vl=lower_bound(left,right,val,now*2+1,l,(l+r)/2); if(vl==(l+r)/2) return lower_bound(left,right,val,now*2+2,(l+r)/2,r); return vl; } }; struct Strongly_Connected_Components{ ll N,M; vii edge,ver; vi ind; Strongly_Connected_Components(vii e){ ll n=e.size(); ll m=0; vii revedge(n); ind.resize(n); rep(i,0,n){ m+=e[i].size(); for(auto p:e[i]) revedge[p].pb(i); } vi num(n,-1),po(n); vector<bool> seen(n); ll cnt=0; rep(i,0,n){ if(num[i]==-1){ dfs(i,e,num,cnt); } } rep(i,0,n) po[num[i]]=i; per(i,n-1,0){ ll X=po[i]; if(!seen[X]){ std::queue<ll> que; vi v; que.push(X); seen[X]=1; while(!que.empty()){ ll now=que.front(); que.pop(); v.pb(now); ind[now]=ver.size(); for(auto p:revedge[now]){ if(!seen[p]){ seen[p]=1; que.push(p); } } } ver.pb(v); } } N=ver.size(); M=0; edge.resize(N); rep(i,0,n){ for(auto p:e[i]){ if(ind[i]==ind[p]) continue; M++; edge[ind[i]].pb(ind[p]); } } } void dfs(ll now,vii &e,vi &num,ll &cnt){ num[now]=0; for(auto next:e[now]){ if(num[next]==-1){ dfs(next,e,num,cnt); } } num[now]=cnt++; } }; struct lowlink{ ll N; vii edge; vi ord,low,aps; vector<bool> used; vector<pii> bridges; lowlink(vii e):edge(e){ N=edge.size(); used.resize(N); ord.resize(N); low.resize(N); ll cnt=0; rep(i,0,N){ if(!used[i]) dfs(i,cnt,-1); } } void dfs(ll now,ll &cnt,ll from){ used[now]=1; ord[now]=cnt++; low[now]=ord[now]; bool flag=0; for(auto next:edge[now]){ if(!used[now]){ dfs(next,cnt,now); low[now]=std::min(low[now],low[next]); if(from!=-1&&ord[now]<=low[next]) flag=1; if(ord[now]<low[next]) bridges.pb(mp(now,next)); } else if(next!=from) low[now]=std::min(low[now],ord[next]); } if(from==-1&&edge[now].size()>=2) flag=1; if(flag) aps.pb(now); } }; struct Directed_Gragh{ ll N,M; vii edge; Directed_Gragh(vii e):edge(e){ N=edge.size(); rep(i,0,N) M+=edge[i].size(); } vi sort(){ vi ret; vi cnt(N); rep(i,0,N){ for(auto p:edge[i]) cnt[p]++; } std::queue<ll> que; rep(i,0,N){ if(cnt[i]==0) que.push(i); } while(!que.empty()){ ll now=que.front(); que.pop(); ret.pb(now); for(auto next:edge[now]){ cnt[next]--; if(cnt[next]==0) que.push(next); } } return ret; } }; struct Tree{ int N; vii dp; vi par; vi dist; Tree(vii edge){ N=edge.size(); dp.resize(N); par.resize(N); dist.resize(N,-1); for(int i=0;i<N;i++) dp[i].resize(30); dist[0]=dp[0][0]=0; std::queue<int> que; que.push(0); while(!que.empty()){ int now=que.front(); que.pop(); for(int i=0;i<edge[now].size();i++){ int next=edge[now][i]; if(dist[next]==-1){ dist[next]=dist[now]+1; que.push(next); par[next]=now; dp[next][0]=now; } } } for(int i=1;i<30;i++){ for(int j=0;j<N;j++) dp[j][i]=dp[dp[j][i-1]][i-1]; } } int LCA(int X,int Y){ if(dist[X]<dist[Y]) std::swap(X,Y); { int Z=dist[X]-dist[Y]; for(int i=0;i<30;i++){ if(Z&(1<<i)){ X=dp[X][i]; } } } if(X==Y) return X; for(int i=29;i>=0;i--){ if(dp[X][i]!=dp[Y][i]){ X=dp[X][i]; Y=dp[Y][i]; } } return dp[X][0]; } }; struct Binary_indexed_tree{ int N; vi bit; Binary_indexed_tree(int n):N(n){ bit.resize(N+1,0); } void add(int x,ll a){ for(x;x<=N;x+=(x&-x)) bit[x]+=a; } ll sum(int x){ ll ret=0; for(x;x>0;x-=(x&-x)) ret+=bit[x]; return ret; } ll lower_bound(ll X){ if(sum(N)<X) return -1; ll ret=0,memo=1,sum=0; while(memo*2<=N) memo*=2; while(memo>0){ if(memo+ret<=N&&sum+bit[memo+ret]<X){ sum+=bit[memo+ret]; ret+=memo; } memo/=2; } return ret+1; } }; struct Union_Find{ ll N; vi par; vi siz; Union_Find(int n):N(n){ par.resize(N); siz.resize(N,1); rep(i,0,N) par[i]=i; } ll root(ll X){ if(par[X]==X) return X; return par[X]=root(par[X]); } bool same(ll X,ll Y){ return root(X)==root(Y); } void unite(ll X,ll Y){ X=root(X); Y=root(Y); if(X==Y) return; if(siz[Y]<siz[X]) std::swap(X,Y); par[X]=Y; siz[Y]+=siz[X]; siz[X]=0; } ll size(ll X){ return siz[root(X)]; } }; long long modpow(long long a, long long n, long long mod) { long long res = 1; while (n > 0) { if (n & 1) res = res * a % mod; a = a * a % mod; n >>= 1; } return res; } vi fac,finv,inv; void COMinit() { fac.resize(MAX); finv.resize(MAX); inv.resize(MAX); fac[0] = fac[1] = 1; finv[0] = finv[1] = 1; inv[1] = 1; for (int i = 2; i < MAX; i++){ fac[i] = fac[i - 1] * i % MOD; inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD; finv[i] = finv[i - 1] * inv[i] % MOD; } } ll COM(ll n,ll r){ if(n<r||n<0||r<0) return 0; return fac[n]*finv[r]%MOD*finv[n-r]%MOD; } void comp(vi &A){ std::map<ll,ll> memo; rep(i,0,A.size()) memo[A[i]]=0; ll cnt=1; for(auto &p:memo) p.second=cnt++; rep(i,0,A.size()) A[i]=memo[A[i]]; } void dec(std::map<ll,ll> &mem,ll X){ mem[X]--; if(mem[X]==0) mem.erase(X); } int main(){ std::ios::sync_with_stdio(false); std::cin.tie(nullptr); std::random_device rnd; std::mt19937 mt(rnd()); ll N,M; cin>>N; M=N; vii edge(N); vi X(M),Y(M); Union_Find tree(N); ll x,y; rep(i,0,M){ cin>>X[i]>>Y[i]; X[i]--,Y[i]--; if(tree.same(X[i],Y[i])){ x=X[i]; y=Y[i]; } else{ tree.unite(X[i],Y[i]); edge[X[i]].pb(Y[i]); edge[Y[i]].pb(X[i]); } } Tree tr(edge); vi ans; std::set<pii> set; rep(i,0,M){ if(x==X[i]&&y==Y[i]){ ans.pb(i+1); ll Z=tr.LCA(x,y); while(x!=Z){ ll z=tr.par[x]; set.insert(mp(z,x)); set.insert(mp(x,z)); x=z; } std::swap(x,y); while(x!=Z){ ll z=tr.par[x]; set.insert(mp(z,x)); set.insert(mp(x,z)); x=z; } break; } } rep(i,0,M){ if(set.count(mp(X[i],Y[i]))) ans.pb(i+1); } cout<<ans.size()<<endl; for(auto p:ans) cout<<p<<" "; cout<<endl; }