View Compilation Error

71235_0_10543.cpp: In function `int main()':
71235_0_10543.cpp:11: error: `map' undeclared (first use this function)
71235_0_10543.cpp:11: error: (Each undeclared identifier is reported only once for each function it appears in.)
71235_0_10543.cpp:11: error: expected primary-expression before "int"
71235_0_10543.cpp:11: error: expected `;' before "int"
71235_0_10543.cpp:18: error: `ap' undeclared (first use this function)