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View Compilation Error

0_0_39456862_5021.cpp: In function 'int main()':
0_0_39456862_5021.cpp:5:9: error: 'else' without a previous 'if'
    5 |         else{
      |         ^~~~
0_0_39456862_5021.cpp:6:28: error: 'n' was not declared in this scope
    6 |             for(int i=0; i<n; i++){
      |                            ^
0_0_39456862_5021.cpp:7:17: error: 'v' was not declared in this scope
    7 |                 v.push_back(read());
      |                 ^
0_0_39456862_5021.cpp:7:29: error: 'read' was not declared in this scope
    7 |                 v.push_back(read());
      |                             ^~~~
0_0_39456862_5021.cpp:9:18: error: 'v' was not declared in this scope
    9 |             sort(v.begin(), v.end());
      |                  ^
0_0_39456862_5021.cpp:9:13: error: 'sort' was not declared in this scope; did you mean 'short'?
    9 |             sort(v.begin(), v.end());
      |             ^~~~
      |             short
0_0_39456862_5021.cpp:12:21: error: 'f' was not declared in this scope
   12 |                     f = 1;break;
      |                     ^
0_0_39456862_5021.cpp:16:12: error: 'f' was not declared in this scope
   16 |         if(f) printf("YES\n");
      |            ^
0_0_39456862_5021.cpp:16:15: error: 'printf' was not declared in this scope
   16 |         if(f) printf("YES\n");
      |               ^~~~~~
0_0_39456862_5021.cpp:1:1: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
  +++ |+#include <cstdio>
    1 | 
0_0_39456862_5021.cpp:17:14: error: 'printf' was not declared in this scope
   17 |         else printf("NO\n");
      |              ^~~~~~
0_0_39456862_5021.cpp:17:14: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
0_0_39456862_5021.cpp: At global scope:
0_0_39456862_5021.cpp:19:5: error: expected unqualified-id before 'return'
   19 |     return 0;
      |     ^~~~~~
0_0_39456862_5021.cpp:20:1: error: expected declaration before '}' token
   20 | }
      | ^


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