View Compilation Error

0_0_20398311_15082.cpp: In function 'int main()':
0_0_20398311_15082.cpp:55:72: error: 'd' was not declared in this scope
             if(mouse[i].w>mouse[j].w&&mouse[i].s<mouse[j].s&&(dp[j]+1)>d[i])
                                                                        ^