https://www.acmicpc.net/problem/1107
package BaekJoon.basic;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
public class Q1476 {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringBuilder sb = new StringBuilder();
StringTokenizer st = new StringTokenizer(br.readLine());
int e = Integer.parseInt(st.nextToken());
int s = Integer.parseInt(st.nextToken());
int m = Integer.parseInt(st.nextToken());
int year = 0;
while(true) {
year++;
if ((year - e) % 15 == 0 && (year - s) % 28 == 0 && (year - m) % 19 == 0) {
break;
}
}
System.out.println(year);
}
}