oj.uz

Submission #360220

# Submission time Handle Problem Language Result Execution time Memory
360220 2021-01-27T21:00:08 Z Kerim Comparing Plants (IOI20_plants) C++17
14 / 100
 4000 ms 35772 KB 
#include "plants.h"
#include "bits/stdc++.h"
#define MAXN 200009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;

typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
int h[MAXN],n,k,arr[MAXN];
vector<int>tmp;
struct tree{
	PII s[MAXN<<2];int lazy[MAXN<<2];
	void build(int nd=1,int x=0,int y=n-1){
		lazy[nd]=0;
		if(x==y){
			s[nd]=mp(arr[x],x);
			return;
		}	
		int mid=(x+y)>>1;
		build(nd<<1,x,mid);
		build(nd<<1|1,mid+1,y);
		s[nd]=min(s[nd<<1],s[nd<<1|1]);
	}
	void shift(int nd){
		int &ret=lazy[nd];if(!ret)return;
		lazy[nd<<1]+=ret;s[nd<<1].ff+=ret;
		lazy[nd<<1|1]+=ret;s[nd<<1|1].ff+=ret;
		ret=0;	
	}
	void inc(int l,int r,int val,int nd=1,int x=0,int y=n-1){
		if(l>y or x>r)
			return;
		if(l<=x and y<=r){
			s[nd].ff+=val;
			lazy[nd]+=val;
			return;
		}
		shift(nd);
		int mid=(x+y)>>1;
		inc(l,r,val,nd<<1,x,mid);
		inc(l,r,val,nd<<1|1,mid+1,y);
		s[nd]=min(s[nd<<1],s[nd<<1|1]);
	}
	void print(int nd=1,int x=0,int y=n-1){
		if(x==y){
			printf("%d ",s[nd].ff);
			return;
		}shift(nd);
		int mid=(x+y)>>1;
		print(nd<<1,x,mid);
		print(nd<<1|1,mid+1,y);
		s[nd]=min(s[nd<<1],s[nd<<1|1]);
	}
	void tap(int l,int r,int nd=1,int x=0,int y=n-1){
		if(l>y or x>r or s[nd].ff>0)return;
		if(x==y){
			tmp.pb(x);
			return;
		}shift(nd);
		int mid=(x+y)>>1;
		tap(l,r,nd<<1,x,mid);
		tap(l,r,nd<<1|1,mid+1,y);
		s[nd]=min(s[nd<<1],s[nd<<1|1]);
	}
}ds[2];
void upd(int x,int y,int val,int bro=1){
	if(x<=y){
		ds[0].inc(x,y,val);
		if(bro)ds[1].inc(x,y,val);
	}
	else{ 
		ds[0].inc(x,n-1,val),ds[0].inc(0,y,val);
		if(bro)ds[1].inc(x,n-1,val),ds[1].inc(0,y,val);
	}
}
int get(){
	int a=ds[0].s[1].ff;
	int b=ds[0].s[1].ss;
	assert(a==0);return b;
}
int vis[MAXN];
void zero(int i){	
	if(vis[i])return;vis[i]=1;	
	//printf("zero %d\n",i);
	upd(i+1,(i+k-1)%n,1,0);
}
void flex(int x,int y){
	if(x<=y)ds[1].tap(x,y);
	else ds[1].tap(x,n-1),ds[1].tap(0,y);
}
int d(int x,int y){
	if(x>y)swap(x,y);
	return min(y-x,n-y+x);
}
set<PII>st;
int l[MAXN],r[MAXN];
void init(int K, vector<int> r) {
	n=int(r.size());k=K;
	for(int i=0;i<n;i++)arr[i]=r[i];
	ds[0].build();ds[1].build();
	for(int i=0;i<n;i++)
		if(!arr[i])
			zero(i);
	for(int i=n-1;i>=0;i--){
		int res=get();assert(res>=0 and res<n);h[res]=i;
		//debug(res);
		int pre=(res-K+1+n)%n;
		int nex=(res+K-1)%n;
		upd(res,res,INF);
		upd(pre,res,-1);upd(res,nex,-1,0);
		flex(pre,res);flex(res,nex);
		//ds[0].print();puts("");
		tr(it,tmp)zero(*it);tmp.clear();
		//ds[1].print();
		//puts("");puts("");
	}
	int p=n-k+1;
	for(int i=p;i<n;i++)	
		st.insert(mp(h[i],i));
	for(int i=0;i<n;i++){
		__typeof((st).begin())it=st.lower_bound(mp(h[i],-1));
		if(it!=st.begin()){
			it--;l[i]=it->ss;
		}
		else
			l[i]=-1;
		st.erase(mp(arr[p],p));p=(p+1)%n;
		st.insert(mp(arr[i],i));
	}st.clear();
	p=k-2;
	for(int i=0;i<=p;i++)st.insert(mp(arr[i],i));
	for(int i=n-1;i>=0;i--){
		__typeof((st).begin())it=st.lower_bound(mp(h[i],-1));
		if(it!=st.begin()){
			it--;r[i]=it->ss;
		}
		else
			r[i]=-1;
		st.erase(mp(arr[p],p));p=(p-1+n)%n;
		st.insert(mp(arr[i],i));
	}
}
int compare_plants(int x, int y) {
	if(d(x,y)<k){
		if(h[x]>h[y])return 1;
		else return -1;	
	}
	else{int a;
		a=x;while(~l[a] and a<=x)a=l[a];
		while(~l[a] and l[a]>y)a=l[a];
		if(d(a,y)<k and h[a]>h[y])return 1;
		
		a=x;while(~r[a] and r[a]<y)a=r[a];
		if(d(a,y)<k and h[a]>h[y])return 1;
		
		a=y;while(~l[a] and l[a]>x)a=l[a];
		if(d(a,x)<k and h[a]>h[x])return -1;
		
		a=y;while(~r[a] and y<=a)a=r[a];
		while(~r[a] and r[a]<x)a=r[a];
		if(d(a,x)<k and h[a]>h[x])return -1;
	}
	return 0;
}

Compilation message

plants.cpp: In function 'void zero(int)':
plants.cpp:95:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   95 |  if(vis[i])return;vis[i]=1;
      |  ^~
plants.cpp:95:19: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   95 |  if(vis[i])return;vis[i]=1;
      |                   ^~~
plants.cpp: In function 'void init(int, std::vector<int>)':
plants.cpp:10:18: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   10 | #define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
      |                  ^~~
plants.cpp:125:3: note: in expansion of macro 'tr'
  125 |   tr(it,tmp)zero(*it);tmp.clear();
      |   ^~
plants.cpp:125:23: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  125 |   tr(it,tmp)zero(*it);tmp.clear();
      |                       ^~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 12908 KB Output is correct
2 Correct 7 ms 12908 KB Output is correct
3 Correct 7 ms 12928 KB Output is correct
4 Execution timed out 4072 ms 12908 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 12908 KB Output is correct
2 Correct 7 ms 12928 KB Output is correct
3 Correct 7 ms 12908 KB Output is correct
4 Correct 7 ms 12908 KB Output is correct
5 Correct 8 ms 12908 KB Output is correct
6 Correct 13 ms 13036 KB Output is correct
7 Correct 95 ms 16364 KB Output is correct
8 Correct 9 ms 12908 KB Output is correct
9 Correct 13 ms 13036 KB Output is correct
10 Correct 99 ms 16492 KB Output is correct
11 Correct 233 ms 16108 KB Output is correct
12 Correct 85 ms 16364 KB Output is correct
13 Correct 94 ms 16492 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 12908 KB Output is correct
2 Correct 7 ms 12928 KB Output is correct
3 Correct 7 ms 12908 KB Output is correct
4 Correct 7 ms 12908 KB Output is correct
5 Correct 8 ms 12908 KB Output is correct
6 Correct 13 ms 13036 KB Output is correct
7 Correct 95 ms 16364 KB Output is correct
8 Correct 9 ms 12908 KB Output is correct
9 Correct 13 ms 13036 KB Output is correct
10 Correct 99 ms 16492 KB Output is correct
11 Correct 233 ms 16108 KB Output is correct
12 Correct 85 ms 16364 KB Output is correct
13 Correct 94 ms 16492 KB Output is correct
14 Correct 190 ms 17644 KB Output is correct
15 Correct 2399 ms 35708 KB Output is correct
16 Correct 192 ms 17772 KB Output is correct
17 Correct 2471 ms 35772 KB Output is correct
18 Execution timed out 4078 ms 22780 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 12908 KB Output is correct
2 Correct 7 ms 12908 KB Output is correct
3 Execution timed out 4069 ms 15340 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 13040 KB Output is correct
2 Correct 7 ms 12908 KB Output is correct
3 Execution timed out 4061 ms 12908 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 12908 KB Output is correct
2 Correct 7 ms 12908 KB Output is correct
3 Execution timed out 4088 ms 12908 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 12908 KB Output is correct
2 Correct 7 ms 12908 KB Output is correct
3 Correct 7 ms 12928 KB Output is correct
4 Execution timed out 4072 ms 12908 KB Time limit exceeded
5 Halted 0 ms 0 KB -