20 lines
346 B
C
20 lines
346 B
C
#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char **argv) {
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int n, k;
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scanf("%d %d", &n, &k);
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int sum = 0;
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for (int i = 0; i < k; ++i) {
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int x;
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scanf("%d", &x);
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sum += x;
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}
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int min = sum - (n - k) * 3;
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int max = sum + (n - k) * 3;
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printf("%.6f %.6f\n", min / (double)n, max / (double)n);
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return 0;
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} |