{"trustable":false,"sections":[{"title":"","value":{"format":"HTML","content":"\n \u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e\n彩虹岛的C只鹅经常在明远湖里晒太阳,但为了避免在日光浴时把自己晒伤,每只鹅都会用防晒霜。已知第i只鹅的SPF值如果在minSPF[i]和maxSPF[i]之间(包括minSPF[i]、maxSPF[i]),那么它将不会晒伤,ww给他们带来了L瓶防晒霜,每瓶防晒霜可以把cover[i]只鹅的SPF值变为SPF[i],每只鹅只能用一次防晒霜,ww想请教你最多有多少只鹅不会被晒伤。\n\u003cbr\u003e数据范围:1\u003c\u003dC\u003c\u003d2500,1\u003c\u003dminSPF[i]\u003c\u003dmaxSPF[i]\u003c\u003d1000,1\u003c\u003dL\u003c\u003d2500,1\u003c\u003dSPF[i]\u003c\u003d1000\n \u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\n \u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e\n输入数据的第一行包含两个整数:C和L\n\u003cbr\u003e接下来C行,每行两个整数minSPF[i]和maxSPF[i]\n\u003cbr\u003e接下来L行,每行两个整数SPF[i]和cover[i]\n \u003c/div\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\n \u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e\n结束输出一个整数,表示不会被晒伤的鹅的数量\n \u003c/div\u003e"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre class\u003d\"sio\"\u003e3 2\n3 10\n2 5\n1 5\n6 2\n4 1\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre class\u003d\"sio\"\u003e2\u003c/pre\u003e"}}]}