Problem:
Score : 300 points

Problem Statement

Given is a permutation P_1, \ldots, P_N of 1, \ldots, N.
Find the number of integers i (1 \leq i \leq N) that satisfy the following condition:

For any integer j (1 \leq j \leq i), P_i \leq P_j.

Constraints

1 \leq N \leq 2 \times 10^5

P_1, \ldots, P_N is a permutation of 1, \ldots, N.

All values in input are integers.

Input

Input is given from Standard Input in the following format:

N
P_1 ... P_N

Output

Print the number of integers i that satisfy the condition.

Sample Input 1

5
4 2 5 1 3

Sample Output 1

3

i=1, 2, and 4 satisfy the condition, but i=3 does not - for example, P_i > P_j holds for j = 1.

Similarly, i=5 does not satisfy the condition, either. Thus, there are three integers that satisfy the condition.

Sample Input 2

4
4 3 2 1

Sample Output 2

4

All integers i (1 \leq i \leq N) satisfy the condition.

Sample Input 3

6
1 2 3 4 5 6

Sample Output 3

1

Only i=1 satisfies the condition.

Sample Input 4

8
5 7 4 2 6 8 1 3

Sample Output 4

4

Sample Input 5

1
1

Sample Output 5

1

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Time Limit Exceeded)

import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    if(N==1){System.out.println(1);}else if(N==2){int T =sc.nextInt();
                                                  if(T==1){System.out.println(1);}
                                                  else{System.out.println(2);};}else{
      int M[] = new int [N];
    for(int i=0;i<N;i++){
      M[i]=sc.nextInt();
    if((M[i]==2)||(M[i]==1)){break;}}
    int v =N;
    for(int w=0;w<N;w++){
      if(M[w]==1){v=w;}
      else{v=v;}}
      int s=v;
    for(int r=0;r<v;r++){
      if(M[r]==2){s=r;}
      else{s=s;}}
      int l=s;
      for(int q=0;q<s;q++){
      if(M[q]==2){l=q;}
      else{l=l;}}
    int x=0;
    int L=M[0];
    for(int j=0;j<l;j++){
      for(int k=1;k<=j;k++){
         L= Math.min(L,M[k]);}
      if(L==M[j]){
        x=x+1;}
      else{
        x = x;};}
      if(v==s){if(s==l){System.out.println(x+1);}else{System.out.println(x+2);}}
      else if(s==l){System.out.println(x+2);}else{System.out.println(x+3);}
    }
  }
}