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| 1 | #include <stdio.h> | |
| 2 | ||
| 3 | double power(double n) | |
| 4 | {
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| 5 | int q; | |
| 6 | double c=2; | |
| 7 | - | for (q=n; q>1; q--) {c*=n;}
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| 7 | + | for (q=n; q>1; q--) {c=2*c;}
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| 8 | return c; | |
| 9 | } | |
| 10 | ||
| 11 | int main() | |
| 12 | {
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| 13 | double n, output; | |
| 14 | scanf("%lf",&n);
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| 15 | - | output=power(2,n); |
| 15 | + | output=power(n); |
| 16 | printf("%lf",output);
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| 17 | return 0; | |
| 18 | } |
