16 lines
281 B
C
16 lines
281 B
C
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#include <stdint.h>
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#include <stdio.h>
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int main(int argc, char **argv) {
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int g, t, n;
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scanf("%d %d %d", &g, &t, &n);
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int sum = 0;
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for (int i=0; i<n; i++) {
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int a;
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scanf("%d", &a);
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sum += a;
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}
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int lol = (g-t) * 9/10;
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printf("%d\n", lol-sum);
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return 0;
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}
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