UVA725
UVA725
题意:输入整数n,按从小到大顺序输出所有形如abcde/fghij=n的表达式,其中aj恰好为09的一个排列(可以有前导0),2<=n<=79
#include<bits/stdc++.h>
using namespace std;
bool s[10];
bool solve(int k, int n){
int t;
t = k;
if(k * n > 100000 || k * n < 10000)
return false;
memset(s, false, sizeof(s));
if(k < 10000)
s[0] = true;
while(t){
if(s[t % 10])
return false;
s[t % 10] = true;
t /= 10;
}
t = k * n;
while(t){
if(s[t % 10])
return false;
s[t % 10] = true;
t /= 10;
}
return true;
}
int main(){
#ifdef ONLINE_JUDGE
#else
freopen("in.txt", "r", stdin);
#endif // ONLINE_JUDGE
int n, cnt;
bool flag = false;
while(scanf("%d", &n) && n){
cnt = 0;
if(!flag)
flag = true;
else
printf("\n");
memset(s, false, sizeof(s));
for(int i = 1000; i < 100000; i++){
if(solve(i, n)){
cnt++;
printf("%d / %05d = %d\n", i * n, i, n);
}
}
if(!cnt)
printf("There are no solutions for %d.\n", n);
}
return 0;
}