UVa11582 - Colossal Fibonacci Numbers!(模运算)

#include<iostream> #include<cstdio> #include<cstring> #include<cmath> #include<stack> #include<vector> #include<map> #include<set> #include<queue> #include<algorithm> using namespace std; typedef unsigned long long ULL; const int maxn = 1005; int f[maxn][6*maxn],p[maxn]; int pow_mod(ULL a,ULL b,int n){ if(b==0) return 1; int k=pow_mod(a,b/2,n); k=k*k%n; if(b%2==1) k=k*a%n; return k; } int solve(ULL a,ULL b,int n){ if(a==0||n==1) return 0; int idx=pow_mod(a%p[n],b,p[n]); return f[n][idx]; } int main() { int ncase; int n; for(int n=2;n<=1000;n++){ f[n][0]=0; f[n][1]=1; for(int i=2;;i++){ f[n][i]=(f[n][i⑵]+f[n][i⑴])%n; if(f[n][i⑴]==0&&f[n][i]==1){ p[n]=i⑴; break; } } } scanf("%d",&ncase); while(ncase--){ ULL a,b; cin>>a>>b>>n; cout<<solve(a,b,n)<<" "; } return 0; }