View Compilation Error

0_0_24277164_8689.cpp: In function 'int bui(int, int, int)':
0_0_24277164_8689.cpp:22:19: error: 'mxa' was not declared in this scope
     t[i].v=mxa(a,b);
                   ^
0_0_24277164_8689.cpp: In function 'int fine(int, int, int)':
0_0_24277164_8689.cpp:33:19: error: 'mxa' was not declared in this scope
     return mxa(a,b);
                   ^
0_0_24277164_8689.cpp: In function 'int Up(int, int, int)':
0_0_24277164_8689.cpp:46:18: error: 'mxa' was not declared in this scope
    t[i].v=mxa(a,b);
                  ^