Submission #39799

#	Time	Username	Problem	Language	Result	Execution time	Memory
39799		Pajaraja	Swap (BOI16_swap)	C++14	0 / 100	0 ms	2996 KiB

swap

#include <bits/stdc++.h>
using namespace std;
int p[200007];
bool lock[200007];
void swap(int a,int b)
{
	int t=p[a];
	p[a]=p[b];
	p[b]=t;
}
int main()
{
	int n;
	scanf("%d",&n);
	for(int i=1;i<=n;i++) scanf("%d",&p[i]);
	for(int i=2;i<n;i+=2)
	{
		if(p[i/2]<p[i] && p[i/2]<p[i+1]) swap(i,i+1);
		if(p[i]<p[i/2] && p[i]<p[i+1]) swap(i,i/2);
		if(p[i+1]<p[i/2] && p[i+1]<p[i]) swap(i+1,i/2);
	}
	if(n%2==0 && p[n]<p[n/2]) swap(n,n/2);
	for(int i=1;i<=n;i++) printf("%d ",p[i]);
}

Compilation message (stderr)

swap.cpp: In function 'int main()':
swap.cpp:14:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
swap.cpp:15:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=n;i++) scanf("%d",&p[i]);
                                         ^

• Subtask 1: 0 / 10
• Subtask 2: 0 / 11
• Subtask 3: 0 / 27
• Subtask 4: 0 / 20
• Subtask 5: 0 / 32