#include <cstdio>int main(){ int n1, n2, n3, r; int tmp, ans; while (scanf("%d%d%d%d", &n1, &n2, &n3, &r) != EOF && r > 0) { ans = 100 * (n1 + n2 + n3); for (int i = 0; i * (r + 2) < 100 + r; i++) { tmp = 0; tmp += n1 * ((100 - i * (r + 2) + r - 1) / r + i); tmp += n3 * ((100 + r - 1) / r); tmp += n2 * ((100 - i * (r - 1) + r - 1) / r + i); if (tmp < ans) { ans = tmp; } } printf("%dn", ans); }}
