View Compilation Error

0_0_12269951_10360.cpp: In function `int solve2(int, int, int)':
0_0_12269951_10360.cpp:5: error: `m' undeclared (first use this function)
0_0_12269951_10360.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_12269951_10360.cpp:7: error: `f' undeclared (first use this function)
0_0_12269951_10360.cpp:9: error: `sum' undeclared (first use this function)
0_0_12269951_10360.cpp: In function `int solve1(int, int, int)':
0_0_12269951_10360.cpp:20: error: `g' undeclared (first use this function)
0_0_12269951_10360.cpp:22: error: `sum' undeclared (first use this function)