View Compilation Error

0_0_1654722_5368.cpp:7: error: redefinition of `long long int tree[100000]'
0_0_1654722_5368.cpp:5: error: `long long int tree[100000]' previously declared here
0_0_1654722_5368.cpp: In function `int main()':
0_0_1654722_5368.cpp:110: error: `sum' undeclared (first use this function)
0_0_1654722_5368.cpp:110: error: (Each undeclared identifier is reported only once for each function it appears in.)