0_0_31846825_21502.cpp: In function 'int main()':
0_0_31846825_21502.cpp:56:38: error: expected primary-expression at end of input
while (scanf ("%d %d", &n, &m) && n &
^
0_0_31846825_21502.cpp:56:38: error: expected ')' at end of input
0_0_31846825_21502.cpp:56:38: error: expected statement at end of input
0_0_31846825_21502.cpp:56:38: error: expected '}' at end of input
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