View Compilation Error

0_0_35411413_11970.cpp: In function 'int main()':
0_0_35411413_11970.cpp:7:2: error: '__64int' was not declared in this scope
  __64int n,m,a[22],s[22],k;
  ^
0_0_35411413_11970.cpp:8:2: error: 'a' was not declared in this scope
  a[1] = 1;
  ^
0_0_35411413_11970.cpp:13:30: error: 'n' was not declared in this scope
  while(~scanf("%I64d %I64d",&n,&m))
                              ^
0_0_35411413_11970.cpp:13:33: error: 'm' was not declared in this scope
  while(~scanf("%I64d %I64d",&n,&m))
                                 ^
0_0_35411413_11970.cpp:18:4: error: 's' was not declared in this scope
    s[i] = i;
    ^
0_0_35411413_11970.cpp:25:4: error: 'k' was not declared in this scope
    k = (m-1)/a[n]+1;//计算出在第几组
    ^
0_0_35411413_11970.cpp:27:19: error: 's' was not declared in this scope
    printf("%I64d",s[k]);
                   ^