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View Compilation Error

0_0_35337390_12891.cpp: In function 'int main()':
0_0_35337390_12891.cpp:65:86: error: 'x' was not declared in this scope
             if (g[x1][y1] != g[x2][y2] || g[x1][y1] == 0 || g[x2][y2] == 0 || (x1 == x && y1 == y2)) {
                                                                                      ^


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