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51
LibreOJ/2599/2599.cpp
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51
LibreOJ/2599/2599.cpp
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#include <iostream>
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using std::cin;
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using std::cout;
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const char endl = '\n';
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const int N = 1005;
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const int mod = 1e4 + 7;
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int a, b, k, n, m;
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int fac[N], inv[N];
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int binpow(int a, int b) {
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int res = 1;
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a %= mod;
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while (b) {
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if (b & 1) res = static_cast<long long>(res) * a % mod;
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a = static_cast<long long>(a) * a % mod;
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b >>= 1;
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}
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return res;
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}
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inline int C(int n, int m) {
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return static_cast<long long>(fac[n]) * inv[m] % mod * inv[n - m] % mod;
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}
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int main() {
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std::ios::sync_with_stdio(false);
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cin.tie(nullptr);
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fac[0] = 1;
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for (int i = 1; i <= 1000; i++) {
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fac[i] = static_cast<long long>(fac[i - 1]) * i % mod;
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}
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inv[0] = inv[1] = 1;
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for (int i = 2; i <= 1000; i++) {
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inv[i] = static_cast<long long>(mod - (mod / i)) * inv[mod % i] % mod;
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}
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for (int i = 2; i <= 1000; i++) {
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inv[i] = static_cast<long long>(inv[i - 1]) * inv[i] % mod;
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}
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cin >> a >> b >> k >> n >> m;
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cout << static_cast<long long>(C(k, n)) * binpow(a, n) % mod * binpow(b, m) % mod << endl;
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return 0;
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}
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LibreOJ/2599/data/factor1.ans
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LibreOJ/2599/data/factor8.ans
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LibreOJ/2599/data/factor9.ans
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