UVA 11992(Fast Matrix Operations-线段树区间加&改)[Template:SegmentTree]
FastMatrixOperationsThereisamatrixcontainingatmost106 elementsdividedintorrowsandccolumns.Eachelementhasalocation(x,y)where10)2x1y1x2y2vSeteachelement(x,y)insubmatrix(x1,y1,x2,y2)tov3x1y1x2y2Outputthe