您的答案為: 10
正確答案為: 202


public class a147 {
 public static void main(String[] args) {
 java.util.Scanner scanner=new java.util.Scanner(System.in);
 while(scanner.hasNext()) {
 int n=scanner.nextInt();
 int m=scanner.nextInt();
 int sum=0;
 if(m>n) {
 for(int i=n;i<m;i++) {
 sum=sum+i; 
 if(sum>m) {
 System.out.println(i-n+1);
 break;
 }else {
 continue;
 }
 }}
 if(n>m) {
 for(int i=m;i<n;i++) {
 sum=sum+i; 
 if(sum>n) {
 System.out.println(i-m+1);
 break;
 }else {
 continue;
 }
 }}
 
 }
 }
}