0_0_13522677_6945.cpp: In function 'int main()':
0_0_13522677_6945.cpp:45:27: error: 'n' was not declared in this scope
while (scanf("%d%d", &n, &m) != EOF)
^
0_0_13522677_6945.cpp:45:31: error: 'm' was not declared in this scope
while (scanf("%d%d", &n, &m) != EOF)
^
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