CF1301A- Three Strings

 1 #include <cstdio>
 2 #include <cstring>
 3 using namespace std;
 4 char a[110],b[110],c[110];
 5 int len,T;
 6 bool suc;
 7 bool check(char a,char b,char c)
 8 {
 9     if ((a == b && b == c) || (a == c) || (b == c))
10         return true;
11     return false;
12 }
13 int main()
14 {
15     for (scanf("%d",&T);T;T--)
16     {
17         suc = true;
18         scanf("%s%s%s",a + 1,b + 1,c + 1);
19         len = strlen(a + 1);
20         for (int i = 1;i <= len;i++)
21             if (!check(a[i],b[i],c[i]))
22             {
23                 suc = false;
24                 break;
25             }
26         if (suc == true)
27             printf("YES\n");
28         else
29             printf("NO\n");
30     }
31     return 0;
32 }