sicily1790

#include<iostream>#include<cstdio>#include<algorithm>#include<string>#include<cmath>using namespace std;int c[1010]={0};int d[1010]={0};int sum1=0,sum2=0;int main(){int g;cin>>g;string a,b;for(int j=0;j<g;j++){ cin>>a>>b;sum1=0;sum2=0; if(a!=b) cout<<"NO"<<endl; else {int lena=a.length();if(lena%2==0){for(int i=0;i<lena/2;i++){c[i]=a[2*i]-'0';sum1+=c[i];d[i]=a[2*i+1]-'0';sum2+=d[i];}}else{for(int i=0;i<lena/2+1;i++){if(i==lena/2){c[i]=a[2*i]-'0';sum1+=c[i];}else{c[i]=a[2*i]-'0';sum1+=c[i];d[i]=a[2*i+1]-'0';sum2+=d[i];}}} int t=abs(sum1-sum2);if(t%11==0)cout<<"YES"<<endl;elsecout<<"NO"<<endl;}}return 0;}