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View Compilation Error

0_0_21021607_6748.cpp:6:6: error: expected nested-name-specifier before '&' token
 using namespace std;  
      ^
0_0_21021607_6748.cpp:6:21: error: expected identifier before '&' token
 using namespace std;  
                     ^
0_0_21021607_6748.cpp:6:26: error: expected constructor, destructor, or type conversion before ';' token
 using namespace std;  
                          ^
0_0_21021607_6748.cpp:6:27: error: 'std' does not name a type
 using namespace std;  
                           ^
0_0_21021607_6748.cpp:6:36: error: expected constructor, destructor, or type conversion before ';' token
 using namespace std;  
                                    ^
0_0_21021607_6748.cpp:6:42: error: expected constructor, destructor, or type conversion before ';' token
 using namespace std;  
                                          ^
0_0_21021607_6748.cpp:7:7: error: 'nbsp' declared as reference but not initialized
 const int maxn = 50005;  
       ^
0_0_21021607_6748.cpp:7:16: error: conflicting declaration 'int& nbsp'
 const int maxn = 50005;  
                ^
0_0_21021607_6748.cpp:7:7: note: previous declaration as 'const int& nbsp'
 const int maxn = 50005;  
       ^
0_0_21021607_6748.cpp:7:21: error: 'maxn' does not name a type
 const int maxn = 50005;  
                     ^
0_0_21021607_6748.cpp:7:31: error: expected unqualified-id before '=' token
 const int maxn = 50005;  
                               ^
0_0_21021607_6748.cpp:7:38: error: expected unqualified-id before numeric constant
 const int maxn = 50005;  
                                      ^
0_0_21021607_6748.cpp:7:49: error: expected constructor, destructor, or type conversion before ';' token
 const int maxn = 50005;  
                                                 ^
0_0_21021607_6748.cpp:7:55: error: expected constructor, destructor, or type conversion before ';' token
 const int maxn = 50005;  
                                                       ^
0_0_21021607_6748.cpp:8:7: error: redefinition of 'const int& nbsp'
 const int base = 1000000007;  
       ^
0_0_21021607_6748.cpp:7:7: note: 'const int& nbsp' previously declared here
 const int maxn = 50005;  
       ^
0_0_21021607_6748.cpp:8:16: error: conflicting declaration 'int& nbsp'
 const int base = 1000000007;  
                ^
0_0_21021607_6748.cpp:7:7: note: previous declaration as 'const int& nbsp'
 const int maxn = 50005;  
       ^
0_0_21021607_6748.cpp:8:21: error: 'base' does not name a type
 const int base = 1000000007;  
                     ^
0_0_21021607_6748.cpp:8:31: error: expected unqualified-id before '=' token
 const int base = 1000000007;  
                               ^
0_0_21021607_6748.cpp:8:38: error: expected unqualified-id before numeric constant
 const int base = 1000000007;  
                                      ^
0_0_21021607_6748.cpp:8:54: error: expected constructor, destructor, or type conversion before ';' token
 const int base = 1000000007;  
                                                      ^
0_0_21021607_6748.cpp:8:60: error: expected constructor, destructor, or type conversion before ';' token
 const int base = 1000000007;  
                                                            ^
0_0_21021607_6748.cpp:9:5: error: conflicting declaration 'int& nbsp'
 int n, t, m, l, r, M;  
     ^
0_0_21021607_6748.cpp:7:7: note: previous declaration as 'const int& nbsp'
 const int maxn = 50005;  
       ^
0_0_21021607_6748.cpp:9:10: error: 'n' does not name a type
 int n, t, m, l, r, M;  
          ^
0_0_21021607_6748.cpp:9:18: error: 't' does not name a type
 int n, t, m, l, r, M;  
                  ^
0_0_21021607_6748.cpp:9:26: error: 'm' does not name a type
 int n, t, m, l, r, M;  
                          ^
0_0_21021607_6748.cpp:9:34: error: 'l' does not name a type
 int n, t, m, l, r, M;  
                                  ^
0_0_21021607_6748.cpp:9:42: error: 'r' does not name a type
 int n, t, m, l, r, M;  
                                          ^
0_0_21021607_6748.cpp:9:50: error: 'M' does not name a type
 int n, t, m, l, r, M;  
                                                  ^
0_0_21021607_6748.cpp:9:57: error: expected constructor, destructor, or type conversion before ';' token
 int n, t, m, l, r, M;  
                                                         ^
0_0_21021607_6748.cpp:9:63: error: expected constructor, destructor, or type conversion before ';' token
 int n, t, m, l, r, M;  
                                                               ^
0_0_21021607_6748.cpp:10:6: error: conflicting declaration 'long int& nbsp'
 long long a[4 * maxn];  
      ^
0_0_21021607_6748.cpp:7:7: note: previous declaration as 'const int& nbsp'
 const int maxn = 50005;  
       ^
0_0_21021607_6748.cpp:10:16: error: conflicting declaration 'long int& nbsp'
 long long a[4 * maxn];  
                ^
0_0_21021607_6748.cpp:7:7: note: previous declaration as 'const int& nbsp'
 const int maxn = 50005;  
       ^
0_0_21021607_6748.cpp:10:21: error: 'a' does not name a type
 long long a[4 * maxn];  
                     ^
0_0_21021607_6748.cpp:10:36: error: expected constructor, destructor, or type conversion before ';' token
 long long a[4 * maxn];  
                                    ^
0_0_21021607_6748.cpp:10:37: error: 'maxn' does not name a type
 long long a[4 * maxn];  
                                     ^
0_0_21021607_6748.cpp:10:48: error: expected constructor, destructor, or type conversion before ';' token
 long long a[4 * maxn];  
                                                ^
0_0_21021607_6748.cpp:10:54: error: expected constructor, destructor, or type conversion before ';' token
 long long a[4 * maxn];  
                                                      ^
0_0_21021607_6748.cpp:11:6: error: expected constructor, destructor, or type conversion before ';' token
   
      ^
0_0_21021607_6748.cpp:11:12: error: expected constructor, destructor, or type conversion before ';' token
   
            ^
0_0_21021607_6748.cpp:12:6: error: cannot declare reference to 'void'
 void change(int x,int y)  
      ^
0_0_21021607_6748.cpp:12:6: error: variable or field 'nbsp' declared void
0_0_21021607_6748.cpp:12:26: error: expected ')' before ';' token
 void change(int x,int y)  
                          ^
0_0_21021607_6748.cpp:12:26: error: expected constructor, destructor, or type conversion before ';' token
0_0_21021607_6748.cpp:12:27: error: 'x' does not name a type
 void change(int x,int y)  
                           ^
0_0_21021607_6748.cpp:12:38: error: 'y' does not name a type
 void change(int x,int y)  
                                      ^
0_0_21021607_6748.cpp:12:51: error: expected constructor, destructor, or type conversion before ';' token
 void change(int x,int y)  
                                                   ^
0_0_21021607_6748.cpp:13:1: error: expected unqualified-id before '{' token
 {  
 ^
0_0_21021607_6748.cpp:16:7: error: expected constructor, destructor, or type conversion before ';' token
 }  
       ^
0_0_21021607_6748.cpp:16:13: error: expected constructor, destructor, or type conversion before ';' token
 }  
             ^
0_0_21021607_6748.cpp:17:6: error: expected constructor, destructor, or type conversion before ';' token
   
      ^
0_0_21021607_6748.cpp:17:12: error: expected constructor, destructor, or type conversion before ';' token
   
            ^
0_0_21021607_6748.cpp:18:6: error: conflicting declaration 'long int& nbsp'
 long long find(int l, int r)  
      ^
0_0_21021607_6748.cpp:7:7: note: previous declaration as 'const int& nbsp'
 const int maxn = 50005;  
       ^
0_0_21021607_6748.cpp:18:16: error: conflicting declaration 'long int& nbsp'
 long long find(int l, int r)  
                ^
0_0_21021607_6748.cpp:7:7: note: previous declaration as 'const int& nbsp'
 const int maxn = 50005;  
       ^
0_0_21021607_6748.cpp:18:34: error: expected ')' before ';' token
 long long fin


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