#include<bits/stdc++.h> using namespace std; int main() { int n,m,o,i; for(i=0; ;i++) { scanf("%d%d",&n,&m); printf("\n"); if(n==m) { printf("%d\n",n+1); } else { if(m<n) { o=m; m=n; n=o; } for(i=n; i<=m; i++) { printf("%d\n",i+1); } } } return 0; }
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