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18 lines
257 B
C
18 lines
257 B
C
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#include <stdio.h>
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int main() {
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int x;
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scanf("%d", &x);
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if (x <= 800) {
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printf("0.0\n");
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} else if (x <= 4000) {
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printf("%.1lf\n", (x - 800) * 0.15);
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} else {
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printf("%.1lf\n", x * 0.1);
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}
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return 0;
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}
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