#include<iostream> using namespace std; int main(){ int a,b,a1[300][300],a2[300][300],cnt=0; cin>>a>>b; for (int i=0;i<a;i++){ for (int j=0;j<b;j++){ cin>>a1[i][j]; } } for (int i=0;i<a;i++){ for (int j=0;j<b;j++){ cin>>a2[i][j]; } } for (int i=0;i<a;i++){ for (int j=0;j<b;j++){ if(a1[i][j]==a2[i][j]){ cnt++; } } } printf("%.2f",cnt*1.0/(a*b)*100); }