{"trustable":false,"prependHtml":"\u003cstyle type\u003d\"text/css\"\u003e\n section pre {\n display: block;\n padding: 9.5px;\n margin: 0 0 10px;\n font-size: 13px;\n line-height: 1.42857143;\n word-break: break-all;\n word-wrap: break-word;\n color: #333;\n background: rgba(255, 255, 255, 0.5);\n border: 1px solid #ccc;\n border-radius: 6px;\n }\n\u003c/style\u003e\n\u003cscript\u003e\n window.katexOptions \u003d {\n delimiters: [\n {left: \u0027\\\\(\u0027, right: \u0027\\\\)\u0027, display: false},\n {left: \u0027\\\\[\u0027, right: \u0027\\\\]\u0027, display: true}\n ]\n };\n\u003c/script\u003e\n","sections":[{"title":"问题描述","value":{"format":"MD","content":"有一个1行n列的方格表。\n每个格子里可以填0~3。\n填0不得分,填1得A分,填2得B分,填3得A+B分。\n要求填完方格表的总得分恰好为K,求方案数。(对998244353取模)"}},{"title":"数据范围","value":{"format":"MD","content":"- 1 \u0026le; N, A, B \u0026le; 300000\n- 1 \u0026le; K \u0026le; 180000000000\n- N, A, B, K 都是整数。"}},{"title":"输入","value":{"format":"MD","content":"输入一行,包括四个整数 N, A, B, K。"}},{"title":"输出","value":{"format":"MD","content":"输出一个整数代表方案数。(对998244353取模)"}},{"title":"样例输入1","value":{"format":"MD","content":"```\n4 1 2 5\n```"}},{"title":"样例输出1","value":{"format":"MD","content":"```\n40\n```"}},{"title":"样例输入2","value":{"format":"MD","content":"```\n2 5 6 0\n```"}},{"title":"样例输出2","value":{"format":"MD","content":"```\n1\n```"}},{"title":"样例输入3","value":{"format":"MD","content":"```\n90081 33447 90629 6391049189\n```"}},{"title":"样例输出3","value":{"format":"MD","content":"```\n577742975\n```"}}]}