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View Compilation Error

0_0_11690313_28.cpp:5: error: `Maxn' was not declared in this scope
0_0_11690313_28.cpp:6: error: `Maxn' was not declared in this scope
0_0_11690313_28.cpp: In function `void push_down(int)':
0_0_11690313_28.cpp:9: error: `tree' undeclared (first use this function)
0_0_11690313_28.cpp:9: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11690313_28.cpp: In function `void push_up(int)':
0_0_11690313_28.cpp:20: error: `tree' undeclared (first use this function)
0_0_11690313_28.cpp: In function `void build(int, int, int)':
0_0_11690313_28.cpp:24: error: `tree' undeclared (first use this function)
0_0_11690313_28.cpp:29: error: `lson' undeclared (first use this function)
0_0_11690313_28.cpp:30: error: `rson' undeclared (first use this function)
0_0_11690313_28.cpp: In function `void update(int, int, int, int, int, int)':
0_0_11690313_28.cpp:36: error: `tree' undeclared (first use this function)
0_0_11690313_28.cpp:43: error: `lson' undeclared (first use this function)
0_0_11690313_28.cpp:45: error: `rson' undeclared (first use this function)
0_0_11690313_28.cpp: In function `void query(int, int, int&, int, int, int)':
0_0_11690313_28.cpp:50: error: `tree' undeclared (first use this function)
0_0_11690313_28.cpp:58: error: `lson' undeclared (first use this function)
0_0_11690313_28.cpp:60: error: `rson' undeclared (first use this function)
0_0_11690313_28.cpp: In function `void Solve(int)':
0_0_11690313_28.cpp:65: error: `ans' undeclared (first use this function)
0_0_11690313_28.cpp:70: error: `printf' undeclared (first use this function)
0_0_11690313_28.cpp: In function `int main()':
0_0_11690313_28.cpp:77: error: `scanf' undeclared (first use this function)
0_0_11690313_28.cpp:79: error: `ans' undeclared (first use this function)
0_0_11690313_28.cpp:79: error: `memset' undeclared (first use this function)
0_0_11690313_28.cpp:88: error: `swap' undeclared (first use this function)


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