View Compilation Error

0_0_4584735_14179.cpp:5: error: `usingnamespace' does not name a type
0_0_4584735_14179.cpp:7: error: `constint' does not name a type
0_0_4584735_14179.cpp:8: error: `constint' does not name a type
0_0_4584735_14179.cpp: In function `LL power(LL, LL)':
0_0_4584735_14179.cpp:14: error: `MOD' undeclared (first use this function)
0_0_4584735_14179.cpp:14: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4584735_14179.cpp: At global scope:
0_0_4584735_14179.cpp:20: error: `MAXN' was not declared in this scope
0_0_4584735_14179.cpp: In function `int main()':
0_0_4584735_14179.cpp:36: error: `neg' undeclared (first use this function)
0_0_4584735_14179.cpp:42: error: `sort' undeclared (first use this function)
0_0_4584735_14179.cpp:44: error: `min' undeclared (first use this function)
0_0_4584735_14179.cpp:83: error: `MOD' undeclared (first use this function)