View Compilation Error

0_0_14266663_16360.cpp: In function 'int main()':
0_0_14266663_16360.cpp:51:10: error: redeclaration of 'int t2'
      int t2 = find(k - 1, b[i]);
          ^
0_0_14266663_16360.cpp:50:25: note: 'int t2' previously declared here
                     int t2 = lower_bound(&g[k-1][0], &g[k-1][0] + cnt[k-1], b[i]) - &g[k-1][0];
                         ^