Submission #35150

#	Time	Username	Problem	Language	Result	Execution time	Memory
35150		Pajaraja	Money (IZhO17_money)	C++14	100 / 100	303 ms	9828 KiB

money

#include <bits/stdc++.h>
using namespace std;
int bit[1000007],a[1000007],n;
void upd(int x)
{
	while(x<=1000000)
	{
		bit[x]++;
		x+=(x&-x);
	}
}
int sum(int x)
{
	int s=0;
	while(x>0)
	{
		s+=bit[x];
		x-=(x&-x);
	}
	return s;
}
bool ima(int l,int r) {return sum(r-1)>sum(l);}
int main()
{
	int cnt=1,last=0;
	scanf("%d",&n);
	for(int i=0;i<n;i++) scanf("%d",&a[i]);
	for(int i=1;i<n;i++)
	{
		if(a[i]<a[i-1] || ima(a[last],a[i]))
		{
			cnt++;
			while(last<i) upd(a[last++]);
		}
	}
	printf("%d",cnt);
}

Compilation message (stderr)

money.cpp: In function 'int main()':
money.cpp:26:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
money.cpp:27:40: 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("%d",&a[i]);
                                        ^

• Subtask 1: 9 / 9
• Subtask 2: 16 / 16
• Subtask 3: 20 / 20
• Subtask 4: 55 / 55