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; else cout<<"NO"<<endl; } } return 0; }