0_0_10280304_6340.cpp:8: error: `maxn' was not declared in this scope
0_0_10280304_6340.cpp: In function `void pushup(int)':
0_0_10280304_6340.cpp:11: error: `sum' undeclared (first use this function)
0_0_10280304_6340.cpp:11: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_10280304_6340.cpp: In function `void build(int, int, int)':
0_0_10280304_6340.cpp:15: error: `sum' undeclared (first use this function)
0_0_10280304_6340.cpp: In function `void update(int, int, int, int)':
0_0_10280304_6340.cpp:29: error: `sum' undeclared (first use this function)
0_0_10280304_6340.cpp: In function `int query(int, int, int, int, int)':
0_0_10280304_6340.cpp:45: error: `sum' undeclared (first use this function)
0_0_10280304_6340.cpp: At global scope:
0_0_10280304_6340.cpp:54: error: `maxn' was not declared in this scope
0_0_10280304_6340.cpp: In function `int main()':
0_0_10280304_6340.cpp:64: error: `x' undeclared (first use this function)
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