oj.uz

답안 #111135

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
111135 2019-05-13T22:16:04 Z aleksami Examination (JOI19_examination) C++14
2 / 100
 3000 ms 373876 KB 
#include <bits/stdc++.h>

using namespace std;
#define MAXN 100005
#define MAXBIT 32
typedef pair<int,int> pii;

struct node {node* nula;node* kec;int cnt;};//MAX GAX
void update(node* root,int val)
{
	node* now = root;
	root->cnt++;
	for(int i = MAXBIT-1; i >= 0; i--)
	{
		if(val & (1<<i))
		{
			if(now->kec == NULL)now->kec=new node();
			now=now->kec;
		}
		else 
		{
			if(now->nula == NULL)now->nula=new node();
			now=now->nula;
		}
		now->cnt++;
	}
}
int query(node* root,int val)
{
	int ret=0;
	node* now = root;
	for(int i = MAXBIT-1; i >= 0; i--)
	{
		if(val & (1<<i))
		{
			if(now->kec == NULL)return ret;
			now=now->kec;
		}
		else 
		{
			if(now->kec != NULL)ret += now->kec->cnt;
			if(now->nula == NULL)return ret;
			now=now->nula;
		}
	}ret += now->cnt;
	return ret;
}

node* tree[4*MAXN];

void update(int nod,int left,int right,int idx,int val)
{
	if(left <= idx && idx <= right)
	{
		if(tree[nod]==NULL)tree[nod]=new node();
		//if(val==1)cout << nod << " " << left << " " << right << " " << idx << "\n";
		update(tree[nod],val);
	}
	else return;
	if(left==right)return ;
	int mid=(left+right)>>1;
	update(nod*2,left,mid,idx,val);
	update(nod*2+1,mid+1,right,idx,val);
}
int query(int nod,int left,int right,int l,int r,int x)
{
	if(left > right || left > r || l > right)return 0;
	if(left >= l && right <= r)
	{
		if(tree[nod]==NULL)return 0;
		return query(tree[nod],x);
	}
	int mid=(left+right)>>1;
	return query(nod*2,left,mid,l,r,x)+query(nod*2+1,mid+1,right,l,r,x);
}

vector <int> order_a;
vector <int> order_b;
map <int,int> mp;
int ans[MAXN];
int s[MAXN];
int t[MAXN];
bool cmp(int x,int y){return s[x] < s[y];}
bool cmp0(int x,int y){return t[x] < t[y];}

struct upit
{
	int x,y,z,id;
};
bool cmp2(upit x,upit y)
{
	return x.x<y.x;
}
vector <upit> queries;

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	int n,q;
	cin >> n >> q;
	for(int i = 1; i <= n; i++)
	{
		cin >> s[i] >> t[i];
		order_a.push_back(i);
		order_b.push_back(i);
	}
	sort(order_a.begin(),order_a.end(),cmp);
	sort(order_b.begin(),order_b.end(),cmp0);
	for(int i = 0; i < order_b.size(); i++)mp[order_b[i]]=i+1;
	for(int i = 0; i < q; i++)
	{
		int x,y,z;
		cin >> x >> y >> z;
		upit u;
		u.x=x;u.y=y;u.z=z;u.id=i;
		queries.push_back(u);
	}
	sort(queries.begin(),queries.end(),cmp2);
	int now=n;
	for(int i = q-1; i >= 0; i--)
	{
		while(now-1 >= 0 && s[order_a[now-1]] >= queries[i].x)
		{
			now--;
			update(1,1,n,mp[order_a[now]],s[order_a[now]]+t[order_a[now]]);
		}
		int lo=0,hi=n-1,mid=lo+hi>>1,r=n;
		while(lo<=hi)
		{
			if(t[order_b[mid]]>=queries[i].y)
			{
				r=mid;
				hi=mid-1;
			}
			else lo=mid+1;
			mid=lo+hi>>1;
		}
		r++;
		ans[queries[i].id]=query(1,1,n,r,n,queries[i].z);
	}
	for(int i = 0; i < q; i++)
	{
		cout << ans[i] << " ";
	}
	return 0;
}

Compilation message

examination.cpp: In function 'int main()':
examination.cpp:111:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < order_b.size(); i++)mp[order_b[i]]=i+1;
                 ~~^~~~~~~~~~~~~~~~
examination.cpp:129:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int lo=0,hi=n-1,mid=lo+hi>>1,r=n;
                       ~~^~~
examination.cpp:138:10: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    mid=lo+hi>>1;
        ~~^~~

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 73 ms 31352 KB Output is correct
8 Correct 89 ms 31440 KB Output is correct
9 Correct 62 ms 31480 KB Output is correct
10 Correct 60 ms 31096 KB Output is correct
11 Correct 67 ms 26360 KB Output is correct
12 Correct 28 ms 7544 KB Output is correct
13 Correct 64 ms 31352 KB Output is correct
14 Correct 67 ms 31336 KB Output is correct
15 Correct 85 ms 31408 KB Output is correct
16 Correct 60 ms 26332 KB Output is correct
17 Correct 70 ms 31224 KB Output is correct
18 Correct 17 ms 6912 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3064 ms 373876 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3064 ms 373876 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 73 ms 31352 KB Output is correct
8 Correct 89 ms 31440 KB Output is correct
9 Correct 62 ms 31480 KB Output is correct
10 Correct 60 ms 31096 KB Output is correct
11 Correct 67 ms 26360 KB Output is correct
12 Correct 28 ms 7544 KB Output is correct
13 Correct 64 ms 31352 KB Output is correct
14 Correct 67 ms 31336 KB Output is correct
15 Correct 85 ms 31408 KB Output is correct
16 Correct 60 ms 26332 KB Output is correct
17 Correct 70 ms 31224 KB Output is correct
18 Correct 17 ms 6912 KB Output is correct
19 Execution timed out 3064 ms 373876 KB Time limit exceeded
20 Halted 0 ms 0 KB -