#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

long long expInt(int base, int exp) {
    long long result = 1;
    for (int i = 0; i < exp; i++) {
        result *= base;
    }
    return result;
}

long long modDecomp(int base, int modulo, int power) {
    if (power == 0) {
        return base % modulo;
    }    
    return expInt(modDecomp(base, modulo, power-1), 2) % modulo;
}
    
int main() {
    int a, b;
    long long t;
    const long long modulo = expInt(10, 9) + 7;
    
    scanf("%d", &a);
    scanf("%d", &b);
    scanf("%Ld", &t);
    
    const int base = (a + b) / 2;
    long long result = 1;
    
    // Decompose exponent into powers of 2
    int powers[64] = {0};
    long long mask = 0x1;
    for (int i = 0; i < 64; i++) {
        if ((t & mask) != 0) {
            powers[i] = 1;
        }
        mask <<= 1;
    }
    
    for (int i = 0; i < 64; i++) {
        if (powers[i]) {
            result *= modDecomp(base, modulo, i);
            result %= modulo;
        }
    }
    
    printf("%Ld", result);
    
    return 0;
}