0_0_37332409_7096.cpp: In function 'int main()':
0_0_37332409_7096.cpp:5:33: error: 'scanf' was not declared in this scope
while (scanf("%d %d", &n, &m) != EOF)
^
0_0_37332409_7096.cpp:5:38: error: 'EOF' was not declared in this scope
while (scanf("%d %d", &n, &m) != EOF)
^
0_0_37332409_7096.cpp:19:31: error: 'printf' was not declared in this scope
printf("%d %d\n", x, y);
^
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