View Compilation Error

0_0_17243482_27754.cpp: In function 'int main()':
0_0_17243482_27754.cpp:58:48: error: 'C' was not declared in this scope
                     DP[i] = min(DP[i], DP[j] + C/v1 + T + (s[i] - s[j] - N) / v2);
                                                ^