}aa, bb, cc;lpexe(lp a,lp b,intn,intm,inth){ lp c;memset(c.ar,0,sizeof(c.ar));for(intk =0; k < m; ++k){for(inti =0; i < n; ++i){if(a.ar[i][k] ==0)continue;for(intj =0; j < h; ++j){if(b.ar[k][j] ==0)continue; c.ar[i][j] += a.ar[i]...