Problem:
Score: 100 points

Problem Statement

In this problem, a date is written as Y-M-D. For example, 2019-11-30 means November 30, 2019.

Integers M_1, D_1, M_2, and D_2 will be given as input.

It is known that the date 2019-M_2-D_2 follows 2019-M_1-D_1.

Determine whether the date 2019-M_1-D_1 is the last day of a month.

Constraints

Both 2019-M_1-D_1 and 2019-M_2-D_2 are valid dates in the Gregorian calendar.

The date 2019-M_2-D_2 follows 2019-M_1-D_1.

Input

Input is given from Standard Input in the following format:

M_1 D_1
M_2 D_2

Output

If the date 2019-M_1-D_1 is the last day of a month, print 1; otherwise, print 0.

Sample Input 1

11 16
11 17

Sample Output 1

0

November 16 is not the last day of a month.

Sample Input 2

11 30
12 1

Sample Output 2

1

November 30 is the last day of November.

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


#include<iostream>
using namespace std;
int main() {
  int m1, d1, m2, d2;
  cin >> m1 >> d1;
  cin >> m2 >> d2;
  if (m1 == 2) {
    if (d1 == 28) {
      cout << 1 << endl;
    } else{
    cout << 0 << endl;
    }
  }
  if (m1 == 4 || m1 == 6 || m1 == 9 || m1 == 11) {
    if (d1 == 30) {
      cout << 1 << endl;
    } else{
    cout << 0 << endl;
    }
  } else if (d1 == 31) {
    cout << 1 << endl;
  } else {
    cout << 0 << endl;
  }
}