oj.uz

Submission #157735

# Submission time Handle Problem Language Result Execution time Memory
157735 2019-10-12T19:10:53 Z TadijaSebez Sushi (JOI16_sushi) C++11
5 / 100
 12000 ms 24276 KB 
#include <bits/stdc++.h>
using namespace std;
const int N=400050;
const int S=447;
const int M=N/S+1;
set<int> pos[M];
multiset<pair<int,int>> st[M];
int a[N];
int Push(int B, int x)
{
	st[B].insert({x,0});
	int p;tie(x,p)=*st[B].rbegin();
	st[B].erase(--st[B].end());
	if(p) pos[B].insert(-p);
	return x;
}
void BuildBlock(int B, int l, int r)
{
	pos[B].clear();
	for(int i=l;i<=r;i++) st[B].insert({a[i],-i});
}
void BreakBlock(int B)
{
	while(st[B].size())
	{
		int p=-1;
		if(pos[B].size()) p=*pos[B].rbegin(),pos[B].erase(--pos[B].end());
		while(st[B].size() && -st[B].rbegin()->second>p)
		{
			a[-st[B].rbegin()->second]=st[B].rbegin()->first;
			st[B].erase(--st[B].end());
		}
		if(~p)
		{
			int x,y;tie(x,y)=*st[B].rbegin();y=-y;
			st[B].erase(--st[B].end());
			if(y) pos[B].insert(y);
			a[p]=x;
		}
	}
}
int n,q;
int Push(int B, int l, int r, int x)
{
	BreakBlock(B);
	for(int i=l;i<=r;i++) if(a[i]>x) swap(a[i],x);
	BuildBlock(B,B*S,min((B+1)*S,n)-1);
	return x;
}
void BuildAll(){ for(int l=0;l<n;l+=S) BuildBlock(l/S,l,min(l+S,n)-1);}
int Query(int l, int r, int x)
{
	int L=l/S,R=r/S;
	if(L==R)
	{
		x=Push(L,l,r,x);
	}
	else
	{
		x=Push(L,l,L*S+S-1,x);
		for(int i=L+1;i<R;i++) x=Push(i,x);
		x=Push(R,R*S,r,x);
	}
	return x;
}
int main()
{
	scanf("%i %i",&n,&q);
	for(int i=0;i<n;i++) scanf("%i",&a[i]);
	BuildAll();
	while(q--)
	{
		int l,r,x;
		scanf("%i %i %i",&l,&r,&x);
		l--;r--;
		if(l<=r) x=Query(l,r,x);
		else x=Query(0,r,Query(l,n-1,x));
		printf("%i\n",x);
	}
	return 0;
}

Compilation message

sushi.cpp: In function 'int main()':
sushi.cpp:68:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i %i",&n,&q);
  ~~~~~^~~~~~~~~~~~~~~
sushi.cpp:69:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=0;i<n;i++) scanf("%i",&a[i]);
                       ~~~~~^~~~~~~~~~~~
sushi.cpp:74:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%i %i %i",&l,&r,&x);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 320 ms 644 KB Output is correct
2 Correct 320 ms 860 KB Output is correct
3 Correct 316 ms 684 KB Output is correct
4 Correct 316 ms 760 KB Output is correct
5 Correct 324 ms 560 KB Output is correct
6 Correct 322 ms 552 KB Output is correct
7 Correct 271 ms 548 KB Output is correct
8 Correct 271 ms 556 KB Output is correct
9 Correct 320 ms 692 KB Output is correct
10 Correct 316 ms 572 KB Output is correct
11 Correct 289 ms 692 KB Output is correct
12 Correct 295 ms 608 KB Output is correct
13 Correct 304 ms 816 KB Output is correct
14 Correct 418 ms 760 KB Output is correct
15 Correct 413 ms 760 KB Output is correct
16 Correct 131 ms 564 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 380 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 12021 ms 24276 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 320 ms 644 KB Output is correct
2 Correct 320 ms 860 KB Output is correct
3 Correct 316 ms 684 KB Output is correct
4 Correct 316 ms 760 KB Output is correct
5 Correct 324 ms 560 KB Output is correct
6 Correct 322 ms 552 KB Output is correct
7 Correct 271 ms 548 KB Output is correct
8 Correct 271 ms 556 KB Output is correct
9 Correct 320 ms 692 KB Output is correct
10 Correct 316 ms 572 KB Output is correct
11 Correct 289 ms 692 KB Output is correct
12 Correct 295 ms 608 KB Output is correct
13 Correct 304 ms 816 KB Output is correct
14 Correct 418 ms 760 KB Output is correct
15 Correct 413 ms 760 KB Output is correct
16 Correct 131 ms 564 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 380 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Execution timed out 12021 ms 24276 KB Time limit exceeded
24 Halted 0 ms 0 KB -