제출 #371907

#제출 시각아이디문제언어결과실행 시간메모리
371907RohamIzadidoost공장들 (JOI14_factories)C++14
0 / 100
8060 ms124140 KiB
#pragma GCC optimize("Ofast,unroll-loops,fast-math") #include<bits/stdc++.h> using namespace std; typedef long long ll ; #define pll pair<ll , ll > #define all(x) (x).begin(),(x).end() #define SZ(x) (ll)(x).size() #define X first #define Y second #define mp make_pair #define pii pair<int , int> #define vec vector #define file_io freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout); #define migmig ios::sync_with_stdio(false);cin.tie(0);cout.tie(0); #define pb push_back ll poww(ll a, ll b, ll md) { return (!b ? 1 : (b & 1 ? a * poww(a * a % md, b / 2, md) % md : poww(a * a % md, b / 2, md) % md)); } const int maxn = 5000*100+5 ; const ll inf = 9223372036775807 ; const ll mod = 1e9 + 7 ; const int lg = 20 ; int h[maxn] , st[maxn] , cnt , ft[maxn] , par[lg][maxn] , n , Q , mark[maxn] ; ll ans , d[maxn] , dis[maxn] ; vec<pii> adj[maxn] , g[maxn]; vec<int> t ; queue<int> q ; stack<int> s ; bool cmp(int i , int j){ return (st[i] < st[j]) ; } void predfs(int v , int p){ st[v] = cnt ; cnt++ ; for(auto u : adj[v]){ if(u.X != p){ h[u.X] = h[v] + 1 ; dis[u.X] = dis[v] + u.Y ; par[0][u.X] = v ; for(int i = 1 ;i <lg ; i ++ ) par[i][u.X] = par[i-1][par[i-1][u.X]] ; predfs(u.X , v) ; } } ft[v] = cnt ; } int lca(int u , int v){ if(h[u] > h[v]) swap(u , v) ; for(int i = lg- 1 ; i >= 0 ; i -- ){ if(par[i][v] != -1 && h[par[i][v]] >= h[u]) v = par[i][v] ; } if(v==u) return v ; for(int i = lg - 1 ; i>= 0 ; i -- ){ if(par[i][v] != par[i][u]){ v = par[i][v] ; u = par[i][u] ; } } return par[0][u] ; } /*int main(){ cin>>n>>Q ; for(int i = 1 ; i < n ; i ++ ){ ll u , v , w ; cin>>u>>v>>w ; adj[u].pb({v , w}) ; adj[v].pb({u , w}) ; } for(int i = 0 ;i < lg ; i ++ ) par[i][0] = -1 ; predfs(0 , -1) ; while(Q--){ int S , T ; cin>>S>>T ; int X[S] , Y[T] ; for(int i = 0 ; i < S ; i ++ ) cin>>X[i] ; for(int i = 0 ; i < T ; i ++ ) cin>>Y[i] ; ////////////////////////////////////////// for(int i = 0 ; i < S ; i ++ ){ t.pb(X[i]) ; q.push(X[i]) ; } for(int i = 0 ; i <T ; i ++ ){ t.pb(Y[i]) ; mark[Y[i]] = 1 ; } sort(all(t) , cmp) ; for(int i = 0 ; i < T + S - 1 ; i ++ ){ t.pb(lca(t[i] , t[i + 1])) ; }t.pb(lca(t[T+S-1] , t[0])) ; sort(all(t) , cmp) ; t.resize(unique(all(t)) - t.begin()) ; for(auto u : t){ d[u] = inf ; while(s.size() && !( st[s.top()] < st[u] && ft[u] <= ft[s.top()] ) ) s.pop() ; if(s.size()){ g[u].pb({s.top() , dis[u] - dis[s.top()] }) ; g[s.top()].pb({u , dis[u] - dis[s.top()] }) ; } s.push(u) ; } for(int i = 0 ; i < S ; i ++ ) d[X[i]] = 0 ; ans = inf ; while(SZ(q)){ int v = q.front() ; q.pop() ; for(auto u : g[v]){ if(d[u.X] > d[v] + u.Y){ d[u.X] = d[v] + u.Y ; q.push(u.X) ; if(mark[u.X])ans = min(ans , d[u.X]) ; } } } for(auto u : t){ g[u].clear() ; } for(int i = 0 ; i < T ; i ++ ) mark[Y[i]] = 0 ; while(SZ(q)) q.pop() ; t.clear() ; while(SZ(s)) s.pop() ; cout<<ans << endl ; /////////////////// } }*/ void Init(int N ,int A[] , int B[] , int D[]) { for(int i = 0 ; i < N-1 ; i ++ ){ adj[A[i]].pb({B[i] , D[i]}) ; adj[B[i]].pb({A[i] , D[i]}) ; } for(int i = 0 ;i < lg ; i ++ ) par[i][0] = -1 ; predfs(0 , -1) ; } long long Query(int S , int X[] , int T , int Y[]){ for(int i = 0 ; i < S ; i ++ ){ t.pb(X[i]) ; q.push(X[i]) ; } for(int i = 0 ; i <T ; i ++ ){ t.pb(Y[i]) ; mark[Y[i]] = 1 ; } sort(all(t) , cmp) ; for(int i = 0 ; i < T + S - 1 ; i ++ ){ t.pb(lca(t[i] , t[i + 1])) ; }t.pb(lca(t[T+S-1] , t[0])) ; sort(all(t) , cmp) ; t.resize(unique(all(t)) - t.begin()) ; for(auto u : t){ d[u] = inf ; while(s.size() && !( st[s.top()] < st[u] && ft[u] <= ft[s.top()] ) ) s.pop() ; if(s.size()){ g[u].pb({s.top() , dis[u] - dis[s.top()] }) ; g[s.top()].pb({u , dis[u] - dis[s.top()] }) ; } s.push(u) ; } for(int i = 0 ; i < S ; i ++ ) d[X[i]] = 0 ; ans = inf ; while(SZ(q)){ int v = q.front() ; q.pop() ; for(auto u : g[v]){ if(d[u.X] > d[v] + u.Y){ d[u.X] = d[v] + u.Y ; q.push(u.X) ; if(mark[u.X])ans = min(ans , d[u.X]) ; } } } for(auto u : t){ g[u].clear() ; } for(int i = 0 ; i < T ; i ++ ) mark[Y[i]] = 0 ; while(SZ(q)) q.pop() ; t.clear() ; while(SZ(s)) s.pop() ; return ans ; }

컴파일 시 표준 에러 (stderr) 메시지

factories.cpp: In function 'long long int Query(int, int*, int, int*)':
factories.cpp:166:2: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
  166 |  while(SZ(q)) q.pop() ; t.clear() ; while(SZ(s)) s.pop() ;
      |  ^~~~~
factories.cpp:166:25: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'while'
  166 |  while(SZ(q)) q.pop() ; t.clear() ; while(SZ(s)) s.pop() ;
      |                         ^
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