oj.uz

Submission #157736

# Submission time Handle Problem Language Result Execution time Memory
157736 2019-10-12T19:12:08 Z TadijaSebez Sushi (JOI16_sushi) C++11
5 / 100
 12000 ms 23544 KB 
#include <bits/stdc++.h>
using namespace std;
const int N=400050;
const int S=200;
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 164 ms 632 KB Output is correct
2 Correct 163 ms 632 KB Output is correct
3 Correct 164 ms 632 KB Output is correct
4 Correct 161 ms 632 KB Output is correct
5 Correct 167 ms 660 KB Output is correct
6 Correct 171 ms 660 KB Output is correct
7 Correct 137 ms 632 KB Output is correct
8 Correct 140 ms 760 KB Output is correct
9 Correct 165 ms 760 KB Output is correct
10 Correct 164 ms 760 KB Output is correct
11 Correct 159 ms 772 KB Output is correct
12 Correct 160 ms 764 KB Output is correct
13 Correct 169 ms 632 KB Output is correct
14 Correct 225 ms 888 KB Output is correct
15 Correct 217 ms 768 KB Output is correct
16 Correct 61 ms 604 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 504 KB Output is correct
20 Correct 2 ms 504 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 2 ms 504 KB Output is correct

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 12045 ms 23544 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 164 ms 632 KB Output is correct
2 Correct 163 ms 632 KB Output is correct
3 Correct 164 ms 632 KB Output is correct
4 Correct 161 ms 632 KB Output is correct
5 Correct 167 ms 660 KB Output is correct
6 Correct 171 ms 660 KB Output is correct
7 Correct 137 ms 632 KB Output is correct
8 Correct 140 ms 760 KB Output is correct
9 Correct 165 ms 760 KB Output is correct
10 Correct 164 ms 760 KB Output is correct
11 Correct 159 ms 772 KB Output is correct
12 Correct 160 ms 764 KB Output is correct
13 Correct 169 ms 632 KB Output is correct
14 Correct 225 ms 888 KB Output is correct
15 Correct 217 ms 768 KB Output is correct
16 Correct 61 ms 604 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 504 KB Output is correct
20 Correct 2 ms 504 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 2 ms 504 KB Output is correct
23 Execution timed out 12045 ms 23544 KB Time limit exceeded
24 Halted 0 ms 0 KB -