P3197 [HNOI2008] 越狱

#include <bits/stdc++.h>
#define int long long
using namespace std;
const int mod = 1e5 + 3;
int quiwe(int a, int k) {
    int res = 1ll;
    a %= mod;
    while (k) {
        if (k & 1) res = res * a % mod;
        a = a * a % mod;
        k >>= 1;
    }
    return res;
}
signed main() {
    int n, m;
    scanf("%lld%lld", &m, &n);
    int ans = quiwe(m, n) - (m % mod) * quiwe(m - 1, n - 1) % mod;
    while (ans < 0) ans += mod;
    printf("%lld\n", ans % mod);
}