Submission #932421

#TimeUsernameProblemLanguageResultExecution timeMemory
932421andrei_boacaFood Court (JOI21_foodcourt)C++17
100 / 100
783 ms75088 KiB
#include <bits/stdc++.h> using namespace std; typedef long long ll; typedef pair<ll,ll> pll; const ll INF=1e17; ll n,m,q; struct date { ll tip,l,r,k,c; } v[250005]; vector<int> ev[250005]; bool comp(int a, int b) { return v[a].tip<v[b].tip; } pll arbmin[4*250005]; ll arbmax[4*250005],arbsum[4*250005]; ll topropmin[4*250005],topropmax[4*250005],topropsum[4*250005]; ll sol[250005]; void buildmin(ll nod,ll st,ll dr) { arbmin[nod]={0,st}; if(st==dr) return; ll mij=(st+dr)/2; buildmin(nod*2,st,mij); buildmin(nod*2+1,mij+1,dr); } void propmin(ll nod) { ll val=topropmin[nod]; arbmin[nod*2].first+=val; arbmin[nod*2+1].first+=val; topropmin[nod*2]+=val; topropmin[nod*2+1]+=val; } void updatemin(ll nod,ll st,ll dr,ll a,ll b,ll val) { if(st<dr) propmin(nod); topropmin[nod]=0; if(st>=a&&dr<=b) { arbmin[nod].first+=val; topropmin[nod]+=val; return; } ll mij=(st+dr)/2; if(a<=mij) updatemin(nod*2,st,mij,a,b,val); if(b>mij) updatemin(nod*2+1,mij+1,dr,a,b,val); arbmin[nod]=min(arbmin[nod*2],arbmin[nod*2+1]); } pll querymin(ll nod,ll st,ll dr,ll a,ll b) { if(st<dr) propmin(nod); topropmin[nod]=0; if(st>=a&&dr<=b) return arbmin[nod]; pll rez={INF,INF}; ll mij=(st+dr)/2; if(a<=mij) rez=min(rez,querymin(nod*2,st,mij,a,b)); if(b>mij) rez=min(rez,querymin(nod*2+1,mij+1,dr,a,b)); return rez; } void propmax(ll nod) { ll val=topropmax[nod]; arbmax[nod*2]+=val; arbmax[nod*2+1]+=val; topropmax[nod*2]+=val; topropmax[nod*2+1]+=val; } void updatemax(ll nod,ll st,ll dr,ll a,ll b,ll val) { if(st<dr) propmax(nod); topropmax[nod]=0; if(st>=a&&dr<=b) { arbmax[nod]+=val; topropmax[nod]+=val; return; } ll mij=(st+dr)/2; if(a<=mij) updatemax(nod*2,st,mij,a,b,val); if(b>mij) updatemax(nod*2+1,mij+1,dr,a,b,val); arbmax[nod]=max(arbmax[nod*2],arbmax[nod*2+1]); } ll querymax(ll nod,ll st,ll dr,ll a,ll b) { if(st<dr) propmax(nod); topropmax[nod]=0; if(st>=a&&dr<=b) return arbmax[nod]; ll rez=0; ll mij=(st+dr)/2; if(a<=mij) rez=max(rez,querymax(nod*2,st,mij,a,b)); if(b>mij) rez=max(rez,querymax(nod*2+1,mij+1,dr,a,b)); return rez; } ll getfirst(ll nod,ll st,ll dr,ll val) { if(st<dr) propmax(nod); topropmax[nod]=0; if(arbmax[nod]<val) return INF; if(st==dr) return st; ll mij=(st+dr)/2; if(arbmax[nod*2]>=val) return getfirst(nod*2,st,mij,val); return getfirst(nod*2+1,mij+1,dr,val); } void updatesum(ll nod,ll st,ll dr,ll poz,ll val) { if(st==dr) { arbsum[nod]+=val; return; } ll mij=(st+dr)/2; if(poz<=mij) updatesum(nod*2,st,mij,poz,val); else updatesum(nod*2+1,mij+1,dr,poz,val); arbsum[nod]=arbsum[nod*2]+arbsum[nod*2+1]; } ll querysum(ll nod,ll st,ll dr,ll a,ll b) { if(st>=a&&dr<=b) return arbsum[nod]; ll mij=(st+dr)/2; ll rez=0; if(a<=mij) rez+=querysum(nod*2,st,mij,a,b); if(b>mij) rez+=querysum(nod*2+1,mij+1,dr,a,b); return rez; } int main() { ios_base::sync_with_stdio(false); cin.tie(0); cin>>n>>m>>q; set<ll> setik; for(int i=1;i<=q;i++) { cin>>v[i].tip; if(v[i].tip==1) { cin>>v[i].l>>v[i].r>>v[i].c>>v[i].k; ev[v[i].l].push_back(i); ev[v[i].r+1].push_back(i); setik.insert(v[i].l); setik.insert(v[i].r+1); } if(v[i].tip==2) { cin>>v[i].l>>v[i].r>>v[i].k; ev[v[i].l].push_back(i); ev[v[i].r+1].push_back(i); setik.insert(v[i].l); setik.insert(v[i].r+1); } if(v[i].tip==3) { cin>>v[i].l>>v[i].k; ev[v[i].l].push_back(i); setik.insert(v[i].l); } } buildmin(1,1,q); for(int z:setik) if(!ev[z].empty()) { sort(ev[z].begin(),ev[z].end(),comp); for(int i:ev[z]) { if(v[i].tip==1) { if(z==v[i].l) { updatemin(1,1,q,i,q,v[i].k); updatemax(1,1,q,i,q,v[i].k); } else { updatemin(1,1,q,i,q,-v[i].k); updatemax(1,1,q,i,q,-v[i].k); } } if(v[i].tip==2) { if(z==v[i].l) { updatemin(1,1,q,i,q,-v[i].k); updatesum(1,1,q,i,-v[i].k); } else { updatemin(1,1,q,i,q,v[i].k); updatesum(1,1,q,i,v[i].k); } } if(v[i].tip==3) { bool ok=0; if(i==22) ok=1; ll b=v[i].k; ll t=querymax(1,1,q,1,19); pll p=querymin(1,1,q,1,i); ll st=1; ll dr=i; if(p.first<0) st=p.second+1; if(st>dr) { sol[i]=0; continue; } ll x=querysum(1,1,q,st,dr); b-=x; if(st-1>0) b+=querymax(1,1,q,1,st-1); ll poz=getfirst(1,1,q,b); if(poz<=dr) sol[i]=v[poz].c; } } } for(int i=1;i<=q;i++) if(v[i].tip==3) cout<<sol[i]<<'\n'; return 0; }

Compilation message (stderr)

foodcourt.cpp: In function 'int main()':
foodcourt.cpp:219:26: warning: variable 'ok' set but not used [-Wunused-but-set-variable]
  219 |                     bool ok=0;
      |                          ^~
foodcourt.cpp:223:24: warning: unused variable 't' [-Wunused-variable]
  223 |                     ll t=querymax(1,1,q,1,19);
      |                        ^
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