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  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5.  
  6. long long n, m, t, a[3000001], k;
  7.  
  8.  
  9. int main()
  10.  
  11. {
  12.     scanf("%d%d", &n, &m);
  13.     if (n - 1 <= m && m <= 2*(n + 1))
  14.     {
  15.         if (m == n - 1) {
  16.             a[0] = -1;
  17.             a[m + 1] = -1;
  18.             t = n - 1;
  19.         }
  20.         else if (m == n)
  21.         {
  22.             a[m + 1] = -1;
  23.             t = n;
  24.         }
  25.         else t = n + 1;
  26.         k = m % t;
  27.         if (k == 0 && m != t) k = n + 1;
  28.         if (a[0] == -1) cout<<"0";
  29.         for (int i = 1; i <= n; i++)
  30.         {
  31.             if (a[i] != -1){
  32.             if (k > 0) cout<<"110";
  33.             else cout<<"10";
  34.             k--;
  35.             }
  36.         }
  37.         if (a[m + 1] != -1) {
  38.             if (k > 0) cout<<"11"<<endl;
  39.             else cout<<"1"<<endl;
  40.         }
  41.     }
  42.     else cout<<"-1"<<endl;
  43. }
Runtime error #stdin #stdout 0s 26736KB
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Standard input is empty
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https://ideone.com/wVKUgR
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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