0_0_12102873_25868.cpp: In function `void solve()':
0_0_12102873_25868.cpp:173: error: `c' undeclared (first use this function)
0_0_12102873_25868.cpp:173: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_12102873_25868.cpp:176: error: invalid types `char[int]' for array subscript
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