0
1
mirror of https://git.sb/baoshuo/OI-codes.git synced 2024-12-02 23:56:29 +00:00
OI-codes/S2OJ/553/553.cpp

77 lines
1.6 KiB
C++

#include <bits/stdc++.h>
using namespace std;
const unsigned long long mod = 1e18;
unsigned long long n;
unsigned long long mul(unsigned long long a, unsigned long long b) {
unsigned long long res = 0;
while (b) {
if (b & 1) res = (res + a) % mod;
a = (a << 1) % mod;
b >>= 1;
}
return res;
}
struct matrix {
unsigned long long f[4][4];
matrix() {
memset(f, 0x00, sizeof(f));
}
void init() {
for (int i = 0; i < 4; i++) {
f[i][i] = 1;
}
}
matrix operator*(matrix b) {
matrix res;
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
for (int k = 0; k < 4; k++) {
res[i][j] = (res[i][j] + mul(f[i][k], b[k][j])) % mod;
}
}
}
return res;
}
matrix operator^(unsigned long long b) {
matrix t;
t.init();
while (b) {
if (b & 1) t = t * *this;
*this = *this * *this;
b >>= 1;
}
return t;
}
unsigned long long* operator[](int x) {
return f[x];
}
} a, b;
int main() {
cin >> a[0][2] >> a[0][1] >> a[0][0];
cin >> b[0][0] >> b[1][0] >> b[2][0];
cin >> a[0][3] >> n;
b.f[0][1] = b.f[1][2] = b.f[3][0] = b.f[3][3] = 1;
if (n <= 2) {
cout << a[0][2 - n] << endl;
exit(0);
}
int len = 0;
a = a * (b ^ (n - 2));
for (int i = 0; i < 18 - to_string(a[0][0]).size(); i++) {
cout << 0;
}
cout << a[0][0] << endl;
return 0;
}