oj.uz

Submission #360226

# Submission time Handle Problem Language Result Execution time Memory
360226 2021-01-27T21:45:22 Z Kerim Comparing Plants (IOI20_plants) C++17
38 / 100
 4000 ms 35948 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;	
	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],pre[MAXN],suf[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;
		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);
		tr(it,tmp)zero(*it);tmp.clear();
	}
	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));
	}
	for(int i=0;i<n;i++){
		if(l[i]==-1)pre[i]=i;
		else if(l[i]<i)pre[i]=pre[l[i]];
		else pre[i]=l[i];
	}
	for(int i=n-1;i>=0;i--){
		if(r[i]==-1)suf[i]=i;
		else if(i<r[i])suf[i]=suf[r[i]];
		else suf[i]=r[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=pre[x];if(a==y)return 1;
		while(~l[a] and l[a]>y and a>l[a])a=l[a];
		if(d(a,y)<k and h[a]>h[y])return 1;
		
		a=x;while(~r[a] and r[a]<y and a<r[a])a=r[a];
		if(d(a,y)<k and h[a]>h[y])return 1;
		
		a=y;while(~l[a] and l[a]>x and a>l[a])a=l[a];
		if(d(a,x)<k and h[a]>h[x])return -1;
		
		a=suf[y];if(a==x)return -1;
		while(~r[a] and r[a]<x and a<r[a])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:123:3: note: in expansion of macro 'tr'
  123 |   tr(it,tmp)zero(*it);tmp.clear();
      |   ^~
plants.cpp:123:23: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  123 |   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 9 ms 12908 KB Output is correct
5 Correct 7 ms 12908 KB Output is correct
6 Correct 71 ms 15724 KB Output is correct
7 Correct 167 ms 17132 KB Output is correct
8 Correct 629 ms 26476 KB Output is correct
9 Correct 661 ms 26476 KB Output is correct
10 Correct 1004 ms 26448 KB Output is correct
11 Execution timed out 4057 ms 26396 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #2
14.0 / 14.0

# 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 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 97 ms 16256 KB Output is correct
8 Correct 9 ms 12928 KB Output is correct
9 Correct 13 ms 13036 KB Output is correct
10 Correct 95 ms 16236 KB Output is correct
11 Correct 85 ms 16108 KB Output is correct
12 Correct 84 ms 16364 KB Output is correct
13 Correct 94 ms 16236 KB Output is correct

Subtask #3
13.0 / 13.0

# 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 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 97 ms 16256 KB Output is correct
8 Correct 9 ms 12928 KB Output is correct
9 Correct 13 ms 13036 KB Output is correct
10 Correct 95 ms 16236 KB Output is correct
11 Correct 85 ms 16108 KB Output is correct
12 Correct 84 ms 16364 KB Output is correct
13 Correct 94 ms 16236 KB Output is correct
14 Correct 189 ms 17644 KB Output is correct
15 Correct 2172 ms 32236 KB Output is correct
16 Correct 187 ms 17388 KB Output is correct
17 Correct 2044 ms 32176 KB Output is correct
18 Correct 1020 ms 31012 KB Output is correct
19 Correct 1070 ms 31012 KB Output is correct
20 Correct 2001 ms 35948 KB Output is correct

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 13036 KB Output is correct
2 Correct 7 ms 12908 KB Output is correct
3 Correct 233 ms 15852 KB Output is correct
4 Execution timed out 4062 ms 26476 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #5
11.0 / 11.0

# 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 Correct 7 ms 12908 KB Output is correct
4 Correct 8 ms 12908 KB Output is correct
5 Correct 8 ms 12908 KB Output is correct
6 Correct 9 ms 12908 KB Output is correct
7 Correct 24 ms 13548 KB Output is correct
8 Correct 23 ms 13548 KB Output is correct
9 Correct 29 ms 13548 KB Output is correct
10 Correct 23 ms 13548 KB Output is correct
11 Correct 25 ms 13548 KB Output is correct
12 Correct 26 ms 13548 KB Output is correct
13 Correct 22 ms 13548 KB Output is correct

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 Correct 7 ms 12908 KB Output is correct
4 Correct 7 ms 12908 KB Output is correct
5 Correct 11 ms 12908 KB Output is correct
6 Correct 1052 ms 26476 KB Output is correct
7 Correct 1887 ms 26476 KB Output is correct
8 Correct 1602 ms 26988 KB Output is correct
9 Correct 1879 ms 30768 KB Output is correct
10 Correct 822 ms 26348 KB Output is correct
11 Correct 1969 ms 30188 KB Output is correct
12 Execution timed out 4049 ms 26476 KB Time limit exceeded
13 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 9 ms 12908 KB Output is correct
5 Correct 7 ms 12908 KB Output is correct
6 Correct 71 ms 15724 KB Output is correct
7 Correct 167 ms 17132 KB Output is correct
8 Correct 629 ms 26476 KB Output is correct
9 Correct 661 ms 26476 KB Output is correct
10 Correct 1004 ms 26448 KB Output is correct
11 Execution timed out 4057 ms 26396 KB Time limit exceeded
12 Halted 0 ms 0 KB -