func_code_string: #include <bits/stdc++.h>   template <class t>   inline void read(t &s) {     s = 0;     register int f = 1;     register char c = getchar();     while (!isdigit(c)) {       if (c ==  - ) f = -1;       c = getchar();     }     while (isdigit(c)) s = (s << 3) + (s << 1) + (c ^ 48), c = getchar();     s *= f;     return;   }   template <class t, class... A>   inline void read(t &x, A &...a) {     read(x);     read(a...);   }   template <class t>   inline void write(t x) {     if (x < 0) putchar( - ), x = -x;     int buf[21], top = 0;     while (x) buf[++top] = x % 10, x /= 10;     if (!top) buf[++top] = 0;     while (top) putchar(buf[top--] ^  0 );     return;   }   inline void setIn(std::string s) {     freopen(s.c_str(),  r , stdin);     return;   }   inline void setOut(std::string s) {     freopen(s.c_str(),  w , stdout);     return;   }   inline void setIO(std::string s =   ) {     setIn(s +  .in );     setOut(s +  .out );     return;   }   template <class t>   inline bool ckmin(t &x, t y) {     if (x > y) {       x = y;       return 1;     }     return 0;   }   template <class t>   inline bool ckmax(t &x, t y) {     if (x < y) {       x = y;       return 1;     }     return 0;   }   inline int lowbit(int x) { return x & (-x); }   long double f[105], g[105];   int to[105];   inline int id(int x, int y) {     if (x & 1) return (10 - x) * 10 + 11 - y;     return (10 - x) * 10 + y;   }   signed main(void) {     register int x;     for (int i = 1; i <= 10; ++i)       for (int j = 1; j <= 10; ++j) {         read(x);         if (x) to[id(i, j)] = id(i - x, j);       }     for (int i = 0; i <= 100; ++i) g[i] = 1e18;     f[100] = 0;     for (int i = 94; i <= 99; ++i) f[i] = 6;     for (int i = 93; i; --i) {       for (int j = 1; j <= 6; ++j) f[i] += std::min(f[i + j], g[i + j]) + 1;       f[i] /= 6.0;       if (to[i]) ckmin(g[i], f[to[i]]);     }     std::printf( %.99Lf n , std::min(f[1], g[1]));     return 0;   }   