View Compilation Error

0_0_1973185_6292.cpp: In function `int sol()':
0_0_1973185_6292.cpp:52: error: `max' undeclared (first use this function)
0_0_1973185_6292.cpp:52: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1973185_6292.cpp:54: error: `min' undeclared (first use this function)