解题思路:
这题直接暴力打表,哈哈哈哈哈
注意事项:
没有注意事项,暴力出来直接打表,打表大法好
参考代码:
#include <stdio.h>
int ans[56][2]=
{
220,284,
284,220,
1184,1210,
1210,1184,
2620,2924,
2924,2620,
5020,5564,
5564,5020,
6232,6368,
6368,6232,
10744,10856,
10856,10744,
12285,14595,
14595,12285,
17296,18416,
18416,17296,
63020,76084,
66928,66992,
66992,66928,
67095,71145,
69615,87633,
71145,67095,
76084,63020,
79750,88730,
87633,69615,
88730,79750,
100485,124155,
122265,139815,
122368,123152,
123152,122368,
124155,100485,
139815,122265,
141664,153176,
142310,168730,
153176,141664,
168730,142310,
171856,176336,
176272,180848,
176336,171856,
180848,176272,
185368,203432,
196724,202444,
202444,196724,
203432,185368,
280540,365084,
308620,389924,
319550,430402,
356408,399592,
365084,280540,
389924,308620,
399592,356408,
430402,319550,
437456,455344,
455344,437456,
469028,486178,
486178,469028
};
int main()
{
int a,b,i;
while(scanf("%d %d",&a,&b)!=EOF)
{
int count=0;
for(int i=0; i<56; i++)
if(a<=ans[i][0]&&ans[i][0]<ans[i][1]&&ans[i][1]<=b)
count++;
printf("%d\n",count);
}
return 0;
}
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