func_code_string: #include <bits/stdc++.h>   using namespace std;   inline long long read() {     long long x = 0, f = 1;     char c = getchar();     for (; !isdigit(c); c = getchar())       if (c ==  - ) f = -1;     for (; isdigit(c); c = getchar()) x = (x << 1) + (x << 3) + (c ^ 48);     return x * f;   }   inline void write(long long x) {     if (x < 0) x = -x, putchar( - );     if (x >= 10) write(x / 10);     putchar(x % 10 +  0 );   }   inline void writeln(long long x) {     write(x);     putchar(  n );   }   inline void wri(long long x) {     write(x);     putchar(   );   }   const int maxn = 1e5 + 233;   const int mod = 1e9 + 7;   int f[maxn];   int main() {     int n = read(), m = read();     f[0] = 1;     f[1] = 1;     for (register int i = (2); i <= int(maxn - 1); ++i)       f[i] = (f[i - 1] + f[i - 2]) % mod;     writeln(2ll * (f[n] + f[m] - 1) % mod);     return 0;   }   