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  • 快速幂

     1 #include<bits/stdc++.h>
     2 using namespace std;
     3 long long a,b,p;
     4 long long quickpow(long long a,long long b,long long p)
     5 {
     6     long long ans=1;
     7     while(b)
     8     {
     9         if(b&1) ans=ans%p*a%p;
    10         a=a*a%p;
    11         b>>=1; 
    12     }
    13     return ans%p;
    14 }
    15 int main()
    16 {
    17     scanf("%lld%lld%lld",&a,&b,&p);
    18     long long ans=quickpow(a,b,p)%p;
    19     printf("%lld",ans);
    20     return 0;
    21 }
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  • 原文地址:https://www.cnblogs.com/yu-xing/p/10125755.html
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