7*24=168
而把 1/7 拆分成四个不同单位分数的和,并且四个分母之和比168小的有好多:
输入:7和168
输出:
7
158
{14,27,54,63}
7
168
{14,28,42,84}
7
163
{14,28,44,77}
7
156
{14,30,42,70}
7
152
{14,30,45,63}
7
145
{14,35,40,56}
7
155
{15,24,56,60}
7
162
{15,28,35,84}
7
145
{15,28,42,60}
7
150
{15,30,35,70}
7
141
{15,30,40,56}
7
144
{16,24,48,56}
7
134
{16,28,42,48}
7
164
{18,21,35,90}
7
159
{18,21,36,84}
7
144
{18,21,42,63}
7
134
{18,24,36,56}
7
124
{18,28,36,42}
7
155
{20,21,30,84}
7
136
{20,21,35,60}
7
130
{20,24,30,56}
7
120
{20,28,30,42}
7
129
{21,24,28,56}
7
120
{21,24,35,40}
解的个数为: 24组