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Submission #111140

# Submission time Handle Problem Language Result Execution time Memory
111140 2019-05-13T22:25:17 Z aleksami Examination (JOI19_examination) C++14
2 / 100
 3000 ms 487108 KB 
#include <bits/stdc++.h>

using namespace std;
#define MAXN 100005
#define MAXBIT 31
typedef pair<int,int> pii;

struct node {node* nula;node* kec;int cnt;};
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;
	if(val==0)return root->cnt;
	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 || l > r)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++;
		if(r>n)continue;
		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:113:19: 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:131:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int lo=0,hi=n-1,mid=lo+hi>>1,r=n;
                       ~~^~~
examination.cpp:140:10: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    mid=lo+hi>>1;
        ~~^~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 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 81 ms 31096 KB Output is correct
8 Correct 62 ms 31060 KB Output is correct
9 Correct 74 ms 31056 KB Output is correct
10 Correct 63 ms 30884 KB Output is correct
11 Correct 64 ms 26104 KB Output is correct
12 Correct 23 ms 7424 KB Output is correct
13 Correct 66 ms 31028 KB Output is correct
14 Correct 75 ms 31096 KB Output is correct
15 Correct 88 ms 31100 KB Output is correct
16 Correct 69 ms 26104 KB Output is correct
17 Correct 63 ms 30840 KB Output is correct
18 Correct 27 ms 6648 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3067 ms 487108 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3067 ms 487108 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 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 81 ms 31096 KB Output is correct
8 Correct 62 ms 31060 KB Output is correct
9 Correct 74 ms 31056 KB Output is correct
10 Correct 63 ms 30884 KB Output is correct
11 Correct 64 ms 26104 KB Output is correct
12 Correct 23 ms 7424 KB Output is correct
13 Correct 66 ms 31028 KB Output is correct
14 Correct 75 ms 31096 KB Output is correct
15 Correct 88 ms 31100 KB Output is correct
16 Correct 69 ms 26104 KB Output is correct
17 Correct 63 ms 30840 KB Output is correct
18 Correct 27 ms 6648 KB Output is correct
19 Execution timed out 3067 ms 487108 KB Time limit exceeded
20 Halted 0 ms 0 KB -