{"trustable":false,"prependHtml":"\u003cstyle type\u003d\u0027text/css\u0027\u003e\n .input, .output {\n border: 1px solid #888888;\n }\n .output {\n margin-bottom: 1em;\n position: relative;\n top: -1px;\n }\n .output pre, .input pre {\n background-color: #EFEFEF;\n line-height: 1.25em;\n margin: 0;\n padding: 0.25em;\n }\n \u003c/style\u003e\n \u003clink rel\u003d\"stylesheet\" href\u003d\"//codeforces.org/s/96598/css/problem-statement.css\" type\u003d\"text/css\" /\u003e\u003cscript\u003e window.katexOptions \u003d { disable: true }; \u003c/script\u003e\n\u003cscript type\u003d\"text/x-mathjax-config\"\u003e\n MathJax.Hub.Config({\n tex2jax: {\n inlineMath: [[\u0027$$$\u0027,\u0027$$$\u0027], [\u0027$\u0027,\u0027$\u0027]],\n displayMath: [[\u0027$$$$$$\u0027,\u0027$$$$$$\u0027], [\u0027$$\u0027,\u0027$$\u0027]]\n }\n });\n\u003c/script\u003e\n\u003cscript type\u003d\"text/javascript\" async src\u003d\"https://mathjax.codeforces.org/MathJax.js?config\u003dTeX-AMS_HTML-full\"\u003e\u003c/script\u003e","sections":[{"title":"","value":{"format":"HTML","content":"这天,小明来逛漫展。\n漫展展厅可以用一个n*m的展台矩阵所表示,一些展台展示二次元内容,一些展台展示三次元内容,每个展厅不同时展示两种内容。\n因为疫情防控,小明只能从西北角(坐标为(0,0))的展台展厅,从东南角(坐标为(n,m))的展台离开展厅,并且若位于坐标为(x,y)展台,则接下来只能去东边(坐标为(x,y+1))或南边(坐标为(x+1,y))的展台。\n小明想参观至少p个展台的二次元内容和至少q个展台的三次元内容,那么小明有多少种路径可以选择呢?"}},{"title":"Input","value":{"format":"HTML","content":"输入的第一行包含4个数据,n,m,p,q(1\u003c\u003dn,m\u003c\u003d500,0\u003c\u003dp,q\u003c\u003d10000)。\n接下来n行中,每行包含m个由空格(\u0027 \u0027)分隔的数A[i,j](0\u003c\u003dA[i,j]\u003c\u003d1),表示坐标为(i,j)的展台的展示内容,0为二次元内容,1为三次元内容。"}},{"title":"Output","value":{"format":"HTML","content":"输出一个与题目相辅整数,因为结果可能很大,请对该数模998244353。"}},{"title":"Examples","value":{"format":"HTML","content":"\u003cdiv class\u003d\"sample-test\"\u003e\n \u003cdiv class\u003d\"input\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Input\n \u003c/div\u003e\n \u003cpre\u003e2 2 1 1\n0 0\n1 1\n\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"output\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Output\n \u003c/div\u003e\n \u003cpre\u003e2\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"input\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Input\n \u003c/div\u003e\n \u003cpre\u003e3 3 2 0\n0 0 1\n0 0 1\n1 0 0\n\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"output\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Output\n \u003c/div\u003e\n \u003cpre\u003e6\u003c/pre\u003e\n \u003c/div\u003e\n\u003c/div\u003e"}}]}