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Submission #1092174

#TimeUsernameProblemLanguageResultExecution timeMemory
1092174onlk97Garden (JOI23_garden)C++14
60 / 100
3076 ms4496 KiB
#include <bits/stdc++.h> using namespace std; struct DSU{ vector <int> pa,siz; void init(int n){ for (int i=0; i<=n; i++){ pa.push_back(i); siz.push_back(1); } } int prt(int n){ if (pa[n]==n) return n; return pa[n]=prt(pa[n]); } void unn(int u,int v){ u=prt(u); v=prt(v); if (u==v) return; if (siz[u]<siz[v]) swap(u,v); pa[v]=u; siz[u]+=siz[v]; } int getsiz(int u){ return siz[prt(u)]; } }; int main(){ ios_base::sync_with_stdio(0); cin.tie(0); int n,m,d; cin>>n>>m>>d; int p[n+1],q[n+1],r[m+1],s[m+1]; for (int i=1; i<=n; i++) cin>>p[i]>>q[i]; for (int i=1; i<=m; i++) cin>>r[i]>>s[i]; int cost[d]; bool done[d]; int ans=d*d; for (int i=0; i<d; i++){ for (int j=0; j<d; j++) cost[j]=-1; for (int j=1; j<=n; j++) cost[q[j]]=1e9; for (int j=1; j<=m; j++) cost[s[j]]=max(cost[s[j]],(r[j]-i+d)%d+1); vector <pair <int,int> > v; for (int j=0; j<d; j++) v.push_back({cost[j],j}); sort(v.begin(),v.end()); int height=0; for (int j=1; j<=n; j++) height=max(height,(p[j]-i+d)%d+1); DSU dsu; dsu.init(d); for (int j=0; j<d; j++) done[j]=0; int gap=0; ans=min(ans,height*d); for (auto j:v){ height=max(height,j.first); if (height>=d+10) break; int prv=(j.second+d-1)%d; if (done[prv]) dsu.unn(prv,j.second); int nxt=(j.second+1)%d; if (done[nxt]) dsu.unn(j.second,nxt); gap=max(gap,dsu.getsiz(j.second)); done[j.second]=1; ans=min(ans,height*(d-gap)); } } cout<<ans<<'\n'; }
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