oj.uz

Submission #360222

# Submission time Handle Problem Language Result Execution time Memory
360222 2021-01-27T21:12:50 Z Kerim Comparing Plants (IOI20_plants) C++17
27 / 100
 2117 ms 34192 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);
	ds[1].inc(i,i,INF);
	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> rz) {
	n=int(rz.size());k=K;
	for(int i=0;i<n;i++)arr[i]=rz[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(h[p],p));p=(p+1)%n;
		st.insert(mp(h[i],i));
	}st.clear();p=k-2;
	for(int i=0;i<=p;i++)st.insert(mp(h[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(h[p],p));p=(p-1+n)%n;
		st.insert(mp(h[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;
		/*
		printf("%d %d\n",x,y);
		for(int i=0;i<n;i++)printf("%d ",h[i]);puts("");
		for(int i=0;i<n;i++)printf("%d ",r[i]);puts("");
		for(int i=0;i<n;i++)printf("%d ",l[i]);puts("");*/
		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:126:3: note: in expansion of macro 'tr'
  126 |   tr(it,tmp)zero(*it);tmp.clear();
      |   ^~
plants.cpp:126:23: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  126 |   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 12908 KB Output is correct
4 Correct 7 ms 12908 KB Output is correct
5 Correct 7 ms 12908 KB Output is correct
6 Correct 82 ms 15724 KB Output is correct
7 Incorrect 202 ms 16852 KB Output isn't correct
8 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 12908 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 12928 KB Output is correct
6 Correct 13 ms 13036 KB Output is correct
7 Correct 94 ms 16236 KB Output is correct
8 Correct 9 ms 12908 KB Output is correct
9 Correct 13 ms 13036 KB Output is correct
10 Correct 92 ms 16236 KB Output is correct
11 Correct 81 ms 15980 KB Output is correct
12 Correct 89 ms 16492 KB Output is correct
13 Correct 92 ms 16236 KB Output is correct

Subtask #3
13.0 / 13.0

# 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 12908 KB Output is correct
4 Correct 7 ms 12908 KB Output is correct
5 Correct 8 ms 12928 KB Output is correct
6 Correct 13 ms 13036 KB Output is correct
7 Correct 94 ms 16236 KB Output is correct
8 Correct 9 ms 12908 KB Output is correct
9 Correct 13 ms 13036 KB Output is correct
10 Correct 92 ms 16236 KB Output is correct
11 Correct 81 ms 15980 KB Output is correct
12 Correct 89 ms 16492 KB Output is correct
13 Correct 92 ms 16236 KB Output is correct
14 Correct 192 ms 17260 KB Output is correct
15 Correct 2117 ms 30664 KB Output is correct
16 Correct 187 ms 17388 KB Output is correct
17 Correct 2056 ms 31084 KB Output is correct
18 Correct 1014 ms 29528 KB Output is correct
19 Correct 1064 ms 29548 KB Output is correct
20 Correct 1991 ms 34192 KB Output is correct

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 Incorrect 282 ms 15852 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 12908 KB Output is correct
2 Correct 8 ms 12908 KB Output is correct
3 Correct 7 ms 12908 KB Output is correct
4 Correct 8 ms 12908 KB Output is correct
5 Incorrect 8 ms 12908 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# 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 Incorrect 8 ms 12908 KB Output isn't correct
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 12908 KB Output is correct
4 Correct 7 ms 12908 KB Output is correct
5 Correct 7 ms 12908 KB Output is correct
6 Correct 82 ms 15724 KB Output is correct
7 Incorrect 202 ms 16852 KB Output isn't correct
8 Halted 0 ms 0 KB -