View Compilation Error

194280_0_4285.cpp: In function `int main(int, char**)':
194280_0_4285.cpp:27: error: `vector' undeclared (first use this function)
194280_0_4285.cpp:27: error: (Each undeclared identifier is reported only once for each function it appears in.)
194280_0_4285.cpp:27: error: expected primary-expression before "int"
194280_0_4285.cpp:27: error: expected `;' before "int"
194280_0_4285.cpp:29: error: `b' undeclared (first use this function)