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20 lines
498 B
C++
20 lines
498 B
C++
#include <cstdio>
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int a[101];
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int main()
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{
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int n;
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while (scanf("%d", &n), n)
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{
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for (int i = 0; i < n; i++)
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scanf("%d", a + i);
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int sum = a[0] * 6 + 5;
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for (int i = 0; i < n - 1; i++)
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{
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if (a[i + 1] > a[i]) sum += (a[i + 1] - a[i]) * 6 + 5;
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if (a[i + 1] < a[i]) sum += (a[i] - a[i + 1]) * 4 + 5;
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if (a[i + 1] == a[i]) sum += 5;
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}
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printf("%d\n", sum);
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}
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return 0;
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} |