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View Compilation Error

0_0_26135123_17058.cpp:61:2: error: stray '#' in program
     for(auto a : s[u])
  ^
0_0_26135123_17058.cpp:61:9: error: stray '#' in program
     for(auto a : s[u])
         ^
0_0_26135123_17058.cpp:62:2: error: stray '#' in program
         s[fa].insert(a);
  ^
0_0_26135123_17058.cpp:62:9: error: stray '#' in program
         s[fa].insert(a);
         ^
0_0_26135123_17058.cpp:62:16: error: stray '#' in program
         s[fa].insert(a);
                ^
0_0_26135123_17058.cpp:62:23: error: stray '#' in program
         s[fa].insert(a);
                       ^
0_0_26135123_17058.cpp: In function 'void upp(int, int)':
0_0_26135123_17058.cpp:61:3: error: lvalue required as unary '&' operand
     for(auto a : s[u])
   ^
0_0_26135123_17058.cpp:61:10: error: lvalue required as unary '&' operand
     for(auto a : s[u])
          ^
0_0_26135123_17058.cpp:62:3: error: lvalue required as unary '&' operand
         s[fa].insert(a);
   ^
0_0_26135123_17058.cpp:62:10: error: lvalue required as unary '&' operand
         s[fa].insert(a);
          ^
0_0_26135123_17058.cpp:62:17: error: lvalue required as unary '&' operand
         s[fa].insert(a);
                 ^
0_0_26135123_17058.cpp:62:24: error: lvalue required as unary '&' operand
         s[fa].insert(a);
                        ^
0_0_26135123_17058.cpp:62:42: error: 'a' was not declared in this scope
         s[fa].insert(a);
                                          ^


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