Problem:
Score : 100 points

Problem Statement

You are given three integers A, B and C.
Determine whether C is not less than A and not greater than B.

Constraints

-100≤A,B,C≤100

A, B and C are all integers.

Input

Input is given from Standard Input in the following format:

A B C

Output

If the condition is satisfied, print Yes; otherwise, print No.

Sample Input 1

1 3 2

Sample Output 1

Yes

C=2 is not less than A=1 and not greater than B=3, and thus the output should be Yes.

Sample Input 2

6 5 4

Sample Output 2

No

C=4 is less than A=6, and thus the output should be No.

Sample Input 3

2 2 2

Sample Output 3

Yes

Solution in C++14 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <stdio.h>
#include <algorithm>
#include <vector>
#include <queue>
#include <functional>
int main() {
	int N, K, a, b;
	unsigned long long I[100000];
	for (int i = 0; i < 100000; i++)
		I[i] = 0;
	scanf("%d %d", &N, &K);
	for (int i = 0; i < N; i++) {
		scanf("%d %d", &a, &b);
		I[a - 1] += b;
	}
	int ID = 0, count = 0;
	for(ID = 0, count = 0; ID < 100000 && count < K; ID++)
		count += I[ID];
	printf("%d\n", ID);
}