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#include <cstdio>
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int main()
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{
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int n, m, k, x;
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scanf("%d%d%d%d", &n, &m, &k, &x);
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long long b = 10, ans = 1;
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while (k)
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{
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if (k & 1) ans = (ans*b) % n;
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b = (b*b) % n;
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k >>= 1;
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}
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printf("%d", int((m * ans + x) % n));
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return 0;
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} |
