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View Compilation Error

0_0_20730074_773.cpp:11:8: error: 'maxn' was not declared in this scope
  int m[maxn] [maxn];
        ^
0_0_20730074_773.cpp:11:15: error: 'maxn' was not declared in this scope
  int m[maxn] [maxn];
               ^
0_0_20730074_773.cpp: In function 'mat operator*(mat, mat)':
0_0_20730074_773.cpp:8:25: error: 'x' cannot be used as a function
 #define mod (x) ((x)%MOD)
                         ^
0_0_20730074_773.cpp:21:9: note: in expansion of macro 'mod'
    x += mod( a.m[i][k]*b.m[k][j]);
         ^
0_0_20730074_773.cpp:21:16: error: 'struct mat' has no member named 'm'
    x += mod( a.m[i][k]*b.m[k][j]);
                ^
0_0_20730074_773.cpp:21:26: error: 'struct mat' has no member named 'm'
    x += mod( a.m[i][k]*b.m[k][j]);
                          ^
0_0_20730074_773.cpp:22:8: error: 'struct mat' has no member named 'm'
    ret.m[i][j]=x;
        ^
0_0_20730074_773.cpp: In function 'void init_unit()':
0_0_20730074_773.cpp:29:8: error: 'x' was not declared in this scope
  while(x){
        ^
0_0_20730074_773.cpp:30:21: error: 'a' was not declared in this scope
   if(x&1) ret = ret*a;
                     ^
0_0_20730074_773.cpp:31:3: error: 'a' was not declared in this scope
   a = a*a;
   ^
0_0_20730074_773.cpp:34:9: error: return-statement with a value, in function returning 'void' [-fpermissive]
  return ret;
         ^
0_0_20730074_773.cpp: In function 'int main()':
0_0_20730074_773.cpp:38:4: error: 'struct mat' has no member named 'm'
  s.m[0][0] = 5; s.m[0][1] = 0 ; s.m[1][0] = 2; s.m[1][1] = 0;
    ^
0_0_20730074_773.cpp:38:19: error: 'struct mat' has no member named 'm'
  s.m[0][0] = 5; s.m[0][1] = 0 ; s.m[1][0] = 2; s.m[1][1] = 0;
                   ^
0_0_20730074_773.cpp:38:35: error: 'struct mat' has no member named 'm'
  s.m[0][0] = 5; s.m[0][1] = 0 ; s.m[1][0] = 2; s.m[1][1] = 0;
                                   ^
0_0_20730074_773.cpp:38:50: error: 'struct mat' has no member named 'm'
  s.m[0][0] = 5; s.m[0][1] = 0 ; s.m[1][0] = 2; s.m[1][1] = 0;
                                                  ^
0_0_20730074_773.cpp:39:4: error: 'struct mat' has no member named 'm'
  A.m[0][0] = 5; A.m[0][1] = 12; A.m[1][0] = 2; A.m[1][1] = 5;
    ^
0_0_20730074_773.cpp:39:19: error: 'struct mat' has no member named 'm'
  A.m[0][0] = 5; A.m[0][1] = 12; A.m[1][0] = 2; A.m[1][1] = 5;
                   ^
0_0_20730074_773.cpp:39:35: error: 'struct mat' has no member named 'm'
  A.m[0][0] = 5; A.m[0][1] = 12; A.m[1][0] = 2; A.m[1][1] = 5;
                                   ^
0_0_20730074_773.cpp:39:50: error: 'struct mat' has no member named 'm'
  A.m[0][0] = 5; A.m[0][1] = 12; A.m[1][0] = 2; A.m[1][1] = 5;
                                                  ^
0_0_20730074_773.cpp:46:26: error: 'pow_mat' was not declared in this scope
   mat tmp = pow_mat(A,n-1);
                          ^
0_0_20730074_773.cpp:48:24: error: 'struct mat' has no member named 'm'
   printf("%d/n",(2*tmp.m[0][0]-1)%MOD);
                        ^


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