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View Compilation Error

0_0_36176525_26216.cpp: In function 'std::vector<int> FFT::Minus(std::vector<int>, const std::vector<int>&)':
0_0_36176525_26216.cpp:110:13: error: 'a' was not declared in this scope
     int sza=a.size()-1,szb=b.size()-1;
             ^
0_0_36176525_26216.cpp:112:18: error: 'szb' was not declared in this scope
 poly ans(max(sza,szb)+1);
                  ^
0_0_36176525_26216.cpp: In function 'std::vector<int> FFT::getinv(std::vector<int>, int)':
0_0_36176525_26216.cpp:163:5: error: expected unqualified-id before 'int'
     int sz=a.size();
     ^
0_0_36176525_26216.cpp:164:26: error: 'sz' was not declared in this scope
     For(i,0,n-1) b[i]=(i<sz?a[i]:0);
                          ^
0_0_36176525_26216.cpp:173:1: error: expected primary-expression before '}' token
 }
 ^
0_0_36176525_26216.cpp:173:1: error: expected ';' before '}' token
0_0_36176525_26216.cpp: At global scope:
0_0_36176525_26216.cpp:197:13: error: 'mt' was not declared in this scope
 int Cipolla(mt x){
             ^
0_0_36176525_26216.cpp:197:18: error: expected ',' or ';' before '{' token
 int Cipolla(mt x){
                  ^
0_0_36176525_26216.cpp:469:1: error: expected '}' at end of input
 }
 ^


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