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16 lines
189 B
C
16 lines
189 B
C
#include <stdio.h>
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int main() {
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double a;
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scanf("%lf", &a);
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if (a >= 0 && (int)a == a) {
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printf("Yes\n");
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} else {
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printf("No\n");
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}
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return 0;
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}
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