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#include <stdio.h>
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int main()
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{
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int i;
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do
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/* Unsigned char cast to int */
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i = getchar();
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if (i == EOF)
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break;
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if (i == '\n' || (i >= ' ' && i < 0xfe))
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putchar(i);
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} while(1);
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return 0;
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}