2020.04.04【NOIP普及組】模擬賽C組23

連接node T1: 實在不會LCA，倍增，快速冪 30分代碼：ios #include<iostream> #include<cstdio> using namespace std; int m,n,k,a[100100],x[100010],y[100100]; int main(){ freopen("swap.in","r",stdin); freopen("swap.out","w"

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