Submission #168592

#	Time	Username	Problem	Language	Result	Execution time	Memory
168592		Dovran	Money (IZhO17_money)	C++11	0 / 100	239 ms	262148 KiB

money

#include <bits/stdc++.h>

#define pb push_back
#define ss second
#define ff first
#define N 1000006
#define inf 1000000009
#define ll long long
#define mid(a,b) (a+b)/2

using namespace std;

int n,a[N],sub,vis[N];
map <int,int> m;

void fn(int ind,int pr){
	if(a[ind] == n)
		return;
	if(vis[m[a[ind] + 1]])
		return;
	if(a[ind + 1] != a[ind] + 1) sub++;
	if(a[ind + 1] != a[ind] + 1 and a[ind + 1] > a[ind] and a[ind + 1] < pr){
		vis[ind + 1] = 1;
		pr = a[ind + 1];
		fn(ind + 1,1e9);
	}
	fn(m[a[ind] + 1],pr);
}

int main()
{
	scanf("%d",&n);
	for(int i = 1;i <= n;i++){
		scanf("%d",&a[i]);
		m[a[i]] = i;
	}
	a[n + 1] = -1e9;
	sub++;
	fn(m[1],1e9);
	printf("%d",sub);
}
/*
6
3 6 4 5 1 2
*/

Compilation message (stderr)

money.cpp: In function 'int main()':
money.cpp:32:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
money.cpp:34:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a[i]);
   ~~~~~^~~~~~~~~~~~

• Subtask 1: 0 / 9
• Subtask 2: 0 / 16
• Subtask 3: 0 / 20
• Subtask 4: 0 / 55