0_0_33531028_4324.cpp: In function 'void solve()': 0_0_33531028_4324.cpp:35:5: error: redeclaration of 'll C' ll C = ksm(c, K); ^ 0_0_33531028_4324.cpp:27:8: note: 'll C' previously declared here ll N, C, K; cin >> N >> C >> K; ^