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#include <bits/stdc++.h>

#define For(a,b,c) for(int a=b;a<=c;++a)

#define LL long long

using namespace std;

LL p,b,n,m;

map<LL,int> mp;

int main() {

scanf("%lld%lld%lld",&p,&b,&n);

m=sqrt(p);

LL t=1;

For(i,1,m)t=(t*b)%p,mp[t*n%p]=i;

LL res=1;

For(i,1,m) {

res=(res*t)%p;

int j=mp[res];

if(j) {

printf("%lld\n",(i*m-j+p)%p);

return 0;

}

}

printf("no solution\n");

return 0;

}