oj.uz

답안 #942075

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
942075 2024-03-10T08:16:43 Z MilosMilutinovic 수확 (JOI20_harvest) C++14
5 / 100
 5000 ms 47284 KB 
#include<bits/stdc++.h>
 
#define pb push_back
#define fi first
#define se second
#define mp make_pair
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef long double ld;
 
template <typename T> bool chkmin(T &x,T y){return x>y?x=y,1:0;}
template <typename T> bool chkmax(T &x,T y){return x<y?x=y,1:0;}
 
ll readint(){
	ll x=0,f=1; char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
	while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();}
	return x*f;
}

int n,m,l,c,q,T,root,tsz;
int a[200005],b[200005],prv[200005],deg[200005],rt[200005],fenw[200005],dfn[200005],dfo[200005],cnt[10000005],ls[10000005],rs[10000005];
ll d[200005],sum[10000005];
vector<pair<ll,int>> qs[200005];
vector<array<ll,4>> ev;
vector<ll> my[200005];
ll ans[200005];
vector<int> topo,ch[200005];
bool oncyc[200005];

ll calc(ll x){return x>=c?x:((c-x+l-1)/l)*1ll*l+x;}
ll divb(ll x,ll y){return x>=0?x-x%y:x-((y+(x%y))%y);}

int getprv(int x){
	int d=c%l;
	if(a[1]<=x-d){
		int l=1,r=n,p=1;
		while(l<=r){
			int mid=(l+r)/2;
			if(a[mid]<=x-d) l=mid+1,p=mid; 
			else r=mid-1;
		}
		return p;
	}else{
		int l=1,r=n,p=1;
		while(l<=r){
			int mid=(l+r)/2;
			if(x+::l-a[mid]>=d) l=mid+1,p=mid; 
			else r=mid-1;
		}
		return p;
	}
}

void change(int p,int v){
	for(;p<200005;p|=p+1) fenw[p]+=v;  
}

int ask(int p){
	int v=0;
	for(;p>=0;p=(p&(p+1))-1) v+=fenw[p];
	return v;
}

void dfs1(int x,ll d){
	dfn[x]=++T;
	for(auto&p:my[x]) ev.pb({d+p,0,dfn[x],0});
	for(auto&p:qs[x]) ev.pb({p.fi+d,1,x,p.se});
	for(auto&p:my[x]) my[rt[x]].pb(p+d);
	for(int v:ch[x]){
		rt[v]=rt[x];
		ll w=calc(a[x]<=a[v]?a[v]-a[x]:a[v]+l-a[x]);
		dfs1(v,d+w);
	}
	dfo[x]=T;
}

void modifyy(int&id,int l,int r,int p,ll v){
	if(!id) id=++tsz;
	sum[id]+=v;
	cnt[id]++;  
	if(l==r) return;
	int mid=(l+r)/2;
	if(p<=mid) modifyy(ls[id],l,mid,p,v);
	else modifyy(rs[id],mid+1,r,p,v);
}

void modifyx(int&id,int xl,int xr,int yl,int yr,int x,int y,ll v){
	if(!id) id=++tsz;
	modifyy(cnt[id],yl,yr,y,v);
	if(xl==xr) return;
	int mid=(xl+xr)/2;
	if(x<=mid) modifyx(ls[id],xl,mid,yl,yr,x,y,v);
	else modifyx(rs[id],mid+1,xr,yl,yr,x,y,v);
}

pair<ll,int> queryy(int id,int l,int r,int ql,int qr){
	if(ql<=l&&r<=qr) return mp(sum[id],cnt[id]);
	int mid=(l+r)/2;
	if(qr<=mid) return queryy(ls[id],l,mid,ql,qr);
	else if(ql>mid) return queryy(rs[id],mid+1,r,ql,qr);
	pair<ll,int> lv=queryy(ls[id],l,mid,ql,qr);
	pair<ll,int> rv=queryy(rs[id],mid+1,r,ql,qr);
	return mp(lv.fi+rv.fi,lv.se+rv.se);
}

pair<ll,int> queryx(int id,int xl,int xr,int yl,int yr,int x1,int x2,int y1,int y2){
	if(x1<=xl&&xr<=x2) return queryy(cnt[id],yl,yr,y1,y2);
	int mid=(xl+xr)/2;
	if(x2<=mid) return queryx(ls[id],xl,mid,yl,yr,x1,x2,y1,y2);
	else if(x1>mid) return queryx(rs[id],mid+1,xr,yl,yr,x1,x2,y1,y2);
	pair<ll,int> lv=queryx(ls[id],xl,mid,yl,yr,x1,x2,y1,y2);
	pair<ll,int> rv=queryx(rs[id],mid+1,xr,yl,yr,x1,x2,y1,y2);
	return mp(lv.fi+rv.fi,lv.se+rv.se);
}

void clry(int id,int l,int r){
	if(!id) return;
	int mid=(l+r)/2;
	clry(ls[id],l,mid);
	clry(rs[id],mid+1,r);
	ls[id]=rs[id]=cnt[id]=sum[id]=0;
}

void clrx(int id,int xl,int xr,int yl,int yr){
	if(!id) return;
	clry(cnt[id],yl,yr);
	int mid=(xl+xr)/2;
	clrx(ls[id],xl,mid,yl,yr);
	clrx(rs[id],mid+1,xr,yl,yr);
	ls[id]=rs[id]=cnt[id]=sum[id]=0;
}

int main(){
	n=readint(); m=readint(); l=readint(); c=readint();
	for(int i=1;i<=n;i++) a[i]=readint();
	for(int i=1;i<=m;i++) b[i]=readint();
	q=readint();
	for(int i=1;i<=q;i++){
		int v=readint();
		ll t=readint();
		qs[v].pb(mp(t,i));
	}
	for(int i=1;i<=n;i++) prv[i]=getprv(a[i]);
	for(int i=1;i<=m;i++){
		int idx;
		if(a[1]<=b[i]){
			int l=1,r=n;
			while(l<=r){
				int mid=(l+r)/2;
				if(a[mid]<=b[i]) idx=mid,l=mid+1;
				else r=mid-1;
			}
		}else idx=n;
		my[idx].pb((b[i]-a[idx]+l)%l);
	}
	for(int i=1;i<=n;i++) deg[prv[i]]++;
	for(int i=1;i<=n;i++) if(deg[i]==0) topo.pb(i);
	for(int i=0;i<(int)topo.size();i++){
		int v=topo[i];
		deg[prv[v]]--;
		if(deg[prv[v]]==0) topo.pb(prv[v]);
	}
	for(int i=1;i<=n;i++) oncyc[i]=true;
	for(int i:topo) oncyc[i]=false;
	for(int i=1;i<=n;i++) ch[prv[i]].pb(i);
	for(int i=1;i<=n;i++){
		if(oncyc[i]||!oncyc[prv[i]]) continue;
		rt[i]=prv[i];
		ll w=calc(a[prv[i]]<=a[i]?a[i]-a[prv[i]]:a[i]+l-a[prv[i]]);
		T=0;
		ev.clear();
		dfs1(i,w);
		sort(ev.begin(),ev.end());
		for(auto&p:ev){
			if(p[1]==0){
				change(p[2],1);
			}else{
				ans[p[3]]=ask(dfo[p[2]])-ask(dfn[p[2]]-1);
			}
		}
		for(auto&p:ev) if(p[1]==0) change(p[2],-1);
	}
	for(int i=1;i<=n;i++){
		if(!oncyc[i]) continue;
		vector<int> f;
		int ver=i;
		while(oncyc[ver]){
			f.pb(ver);
			oncyc[ver]=false;
			ver=prv[ver];
		}
		int sz=(int)f.size();
		d[0]=0;
		for(int i=1;i<sz;i++){
			ll w=calc(a[f[i]]<=a[f[i-1]]?a[f[i-1]]-a[f[i]]:a[f[i-1]]+l-a[f[i]]);
			d[i]=d[i-1]+w;
		}
		ll len=d[sz-1]+calc(a[f[0]]<=a[f.back()]?a[f.back()]-a[f[0]]:a[f.back()]+l-a[f[0]]);
		if(f.size()==1) len=calc(l);
		vector<ll> xs1,xs2;
		for(int i=0;i<sz;i++){
			for(auto&p:my[f[i]]){
				xs1.pb(d[i]-p);
				xs2.pb(d[i]-p-divb(d[i]-p,len));
			}
			for(auto&p:qs[f[i]]){
				xs1.pb(p.fi-d[i]);
				xs1.pb(-p.fi+d[i]);
				xs2.pb(len-(p.fi-d[i]-divb(p.fi-d[i],len)));
			}
		}
		sort(xs1.begin(),xs1.end());
		xs1.erase(unique(xs1.begin(),xs1.end()),xs1.end());
		sort(xs2.begin(),xs2.end());
		xs2.erase(unique(xs2.begin(),xs2.end()),xs2.end());
		int sz1=(int)xs1.size(),sz2=(int)xs2.size();
		for(int i=0;i<sz;i++){
			for(auto&p:my[f[i]]){
				int idx1=(int)(lower_bound(xs1.begin(),xs1.end(),d[i]-p)-xs1.begin());
				int idx2=(int)(lower_bound(xs2.begin(),xs2.end(),d[i]-p-divb(d[i]-p,len))-xs2.begin());
				modifyx(root,0,sz1-1,0,sz2-1,idx1,idx2,divb(d[i]-p,len));
			}
			for(auto&p:qs[f[i]]){
				int idx1=(int)(lower_bound(xs1.begin(),xs1.end(),-(p.fi-d[i]))-xs1.begin());
				int idx2=(int)(lower_bound(xs2.begin(),xs2.end(),len-(p.fi-d[i]-divb(p.fi-d[i],len)))-xs2.begin());
				assert(idx1>=0&&idx1<sz1);
				pair<ll,int> tmp=queryx(root,0,sz1-1,0,sz2-1,idx1,sz1-1,0,sz2-1);
				ll s=(tmp.fi+tmp.se*divb(p.fi-d[i],len))/len+tmp.se;
				//ans[p.se]+=s+queryx(root,0,sz1-1,0,sz2-1,idx1,sz1-1,idx2,sz2-1).se;
			}
		}
		clrx(root,0,sz-1,0,sz2-1);
		root=tsz=0;
		for(int i=0;i<sz;i++){
			for(int j=0;j<sz;j++){
				for(auto&p:my[f[i]]){
					for(auto&pp:qs[f[j]]){
						ans[pp.se]+=max(0ll,pp.fi-(i<=j?d[j]-d[i]:d[j]+len-d[i])-p+len)/len;
					}
				}
			}
		}
	}
	for(int i=1;i<=q;i++) printf("%lld\n",ans[i]);
}

Compilation message

harvest.cpp: In function 'int main()':
harvest.cpp:231:9: warning: unused variable 'idx2' [-Wunused-variable]
  231 |     int idx2=(int)(lower_bound(xs2.begin(),xs2.end(),len-(p.fi-d[i]-divb(p.fi-d[i],len)))-xs2.begin());
      |         ^~~~
harvest.cpp:234:8: warning: unused variable 's' [-Wunused-variable]
  234 |     ll s=(tmp.fi+tmp.se*divb(p.fi-d[i],len))/len+tmp.se;
      |        ^

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 21084 KB Output is correct
2 Correct 8 ms 21180 KB Output is correct
3 Correct 93 ms 27520 KB Output is correct
4 Correct 13 ms 31516 KB Output is correct
5 Correct 11 ms 30016 KB Output is correct
6 Correct 13 ms 29980 KB Output is correct
7 Correct 11 ms 29948 KB Output is correct
8 Correct 10 ms 29020 KB Output is correct
9 Correct 10 ms 29108 KB Output is correct
10 Correct 11 ms 29400 KB Output is correct
11 Correct 11 ms 29340 KB Output is correct
12 Correct 67 ms 27964 KB Output is correct
13 Correct 75 ms 27740 KB Output is correct
14 Correct 45 ms 22544 KB Output is correct
15 Correct 11 ms 29692 KB Output is correct
16 Correct 14 ms 29820 KB Output is correct
17 Correct 11 ms 29720 KB Output is correct
18 Correct 12 ms 29724 KB Output is correct
19 Correct 11 ms 29724 KB Output is correct
20 Correct 11 ms 29608 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 5009 ms 47284 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 21084 KB Output is correct
2 Correct 8 ms 21180 KB Output is correct
3 Correct 93 ms 27520 KB Output is correct
4 Correct 13 ms 31516 KB Output is correct
5 Correct 11 ms 30016 KB Output is correct
6 Correct 13 ms 29980 KB Output is correct
7 Correct 11 ms 29948 KB Output is correct
8 Correct 10 ms 29020 KB Output is correct
9 Correct 10 ms 29108 KB Output is correct
10 Correct 11 ms 29400 KB Output is correct
11 Correct 11 ms 29340 KB Output is correct
12 Correct 67 ms 27964 KB Output is correct
13 Correct 75 ms 27740 KB Output is correct
14 Correct 45 ms 22544 KB Output is correct
15 Correct 11 ms 29692 KB Output is correct
16 Correct 14 ms 29820 KB Output is correct
17 Correct 11 ms 29720 KB Output is correct
18 Correct 12 ms 29724 KB Output is correct
19 Correct 11 ms 29724 KB Output is correct
20 Correct 11 ms 29608 KB Output is correct
21 Execution timed out 5009 ms 47284 KB Time limit exceeded
22 Halted 0 ms 0 KB -