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19 lines
214 B
C
19 lines
214 B
C
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#include <math.h>
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#include <stdio.h>
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int main() {
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int n;
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scanf("%d", &n);
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int m = sqrt(n);
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if (m * m == n) {
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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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