View Compilation Error

0_0_18467251_15972.cpp: In function 'void f2(int, int, int, int, int)':
0_0_18467251_15972.cpp:68:18: error: 'assert' was not declared in this scope
     assert(yi<MAB);
                  ^
0_0_18467251_15972.cpp:75:18: error: 'assert' was not declared in this scope
     assert(yi<MAB);
                  ^
0_0_18467251_15972.cpp: In function 'void f1(int, int, int, int, int)':
0_0_18467251_15972.cpp:87:17: error: 'assert' was not declared in this scope
    assert(yi<MAB);
                 ^
0_0_18467251_15972.cpp:95:17: error: 'assert' was not declared in this scope
    assert(yi<MAB);
                 ^
0_0_18467251_15972.cpp:103:18: error: 'assert' was not declared in this scope
     assert(yi<MAB);
                  ^
0_0_18467251_15972.cpp:111:18: error: 'assert' was not declared in this scope
     assert(xi<MAA);
                  ^
0_0_18467251_15972.cpp:118:18: error: 'assert' was not declared in this scope
     assert(xi<MAA);
                  ^