#include #include #include #include #include /* TODO */ #if 0 #define dpf(x) printf x #else #define dpf(x) (void)0 #endif #define dp dpf #define FMAX 41 unsigned int fib[] = { 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765, 10946, 17711, 28657, 46368, 75025, 121393, 196418, 317811, 514229, 832040, 1346269, 2178309, 3524578, 5702887, 9227465, 14930352, 24157817, 39088169, 63245986, 102334155, 165580141, 267914296, 433494437 }; unsigned int parse_rev( char * const start ) { char * end = strchr( start, 0 ); unsigned int * f = &fib[0]; unsigned int result = 0; do { if (*(--end) == '1') result += *f; ++f; } while (end != start); return result; } unsigned int print_fib( unsigned int n, char * const orig_dst ) { unsigned int * f = &fib[FMAX]; char * dst = NULL; do { if (n >= *f) { n -= *f; if (!dst) dst = orig_dst; *dst++ = '1'; } else if (dst) *dst++ = '0'; --f; } while (n || f >= &fib[0]); *dst = 0; return dst - orig_dst; } int main(void) { char line[150], out1[50], out2[50], out3[50], *l2; unsigned int n1, n2; int len; while (gets(line)) { l2 = strchr(line,' ') + 1; l2[-1] = 0; n1 = parse_rev( line ); n2 = parse_rev( l2 ); dpf(("n1,n2,sum: %u, %u, %u\n", n1, n2, n1+n2)); print_fib( n1, out1 ); print_fib( n2, out2 ); len = print_fib( n1+n2, out3 ); printf(" %*s\n+ %*s\n ", len, out1, len, out2 ); while (len--) putchar('-'); printf("\n %*s\n\n", len, out3 ); } return 0; }