0_0_30161454_7134.cpp:5:26: error: redefinition of 'int n' int Case, n, m, i, j, k, n, dcy[N], pos[N]; ^ 0_0_30161454_7134.cpp:5:11: note: 'int n' previously declared here int Case, n, m, i, j, k, n, dcy[N], pos[N]; ^