18 lines
334 B
C++
18 lines
334 B
C++
#include <bits/stdc++.h>
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using namespace std;
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int main() {
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int n, k;
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cin >> n >> k;
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vector<int> c(n);
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for (int i = 0; i < n; i++) cin >> c[i];
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int c_num = 0, energy = 100;
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do {
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c_num = (c_num + k) % n;
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energy--;
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if (c[c_num] == 1) energy -= 2;
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} while (c_num != 0 || energy <= 0);
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cout << energy << endl;
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return 0;
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}
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