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\n\u6211\u60f3\u4e86\u5f88\u4e45\u5f88\u4e45\u3002\u60f3\u5230\u4e86\u4e00\u79cd\u505a\u6cd5\u3002\u4f46\u662f\u4e00\u5199\u5c31\u611f\u89c9\u5f88\u9ebb\u3002
\n\u60f3\u7740\u60f3\u7740\uff0c\u7b97\u4e86\u4e00\u4e0b\u590d\u6742\u5ea6\uff0c\u7136\u540e\u5927\u558a\u4e00\u58f0\uff0cMADE\uff01
\n\u4ed4\u7ec6\u4e00\u60f3\uff0c\u8be2\u95ee2E5\uff0c\u503c\u57df1E5\u3002\u5927\u529b\u4e0a\u5206\u5757\u554a\uff0c\\(O(Nsqrt(M))\\approx 6E7\\)\u4e0d\u6ee1\u3002\u641e\u4ec0\u4e48\u7ebf\u6bb5\u6811\u554a\uff0c\u771f\u662f\u7684\u3002
\n\u597d\u7684\uff0c\u90a3\u4e48\u5927\u529b\u4e0a\u5206\u5757\u3002
\n\u5177\u4f53\u5e94\u8be5\u8981\u600e\u4e48\u5206\u5757\u5462\uff1f
\n\u5bf9\u4e8e\u6bcf\u4e00\u5757\uff0c\u6211\u4eec\u5b9a\u4e49\u4e00\u79cd\u6807\u8bb0\u3002
\n\u5982\u679c\u6807\u8bb0\u662f0\uff0c\u8bf4\u660e\u8fd9\u4e2a\u5757\u662f\u7a7a\u7684\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u76f4\u63a5\u4fee\u6539\uff1b
\n\u5982\u679c\u6807\u8bb0\u662f\u4e00\u4e2a\u6b63\u6574\u6570\uff0c\u8bf4\u660e\u8fd9\u4e2a\u5757\u88ab\u8be5\u6b63\u6574\u6570\u5b8c\u5168\u5305\u542b\uff0c\u4e5f\u53ef\u4ee5\u76f4\u63a5\u4fee\u6539\uff0c\u5e76\u5c06\u8be5\u6807\u8bb0\u6307\u7684\u6570\u653e\u5165\u5220\u9664\u96c6\u5408\uff1b
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\n\u56e0\u6b64\uff0c\u5bf9\u4e8e\u4e00\u4e2a\u8be2\u95ee\uff0c\u5b83\u6700\u591a\u53ea\u53ef\u80fd\u88ab\u66b4\u529b\u4fee\u6539\u4e24\u6b21\u3002
\n\u6240\u4ee5\u8fd9\u79cd\u505a\u6cd5\u662f\u53ef\u884c\u7684\u3002<\/p>\n
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\n\u5177\u4f53\u6765\u8bf4\uff0c\u5c31\u662f\u628aSet\u5f53\u4f5c\u7ea2\u9ed1\u6811\u7528\u3002
\n\u592a\u731b\u4e86\u3002<\/p>\n
#include<cmath>\r\n#include\r\n#include\r\n#include<cstring>\r\n#include<set> \r\nusing namespace std;\r\n#define MAXN 100000\r\nint n;\r\nstruct data{\r\n\tint l,r;\r\n\tbool operator <(const data &A)const{\r\n\t\treturn (this->l==A.l)?(this->l<A.r):(this->l<A.l);\r\n\t}\r\n};\r\n\r\nset<data> st;\r\nvoid init(){\r\n\tscanf(\"%d\",&n);\r\n\tchar ch[5];\r\n\tint l,r,ans;\r\n\tfor(int i=1;i<=n;++i){\r\n\t\tcin>>ch;\r\n\t\tif(ch[0]=='B'){\r\n\t\t\tprintf(\"%lld\\n\",st.size());\r\n\t\t}else{\r\n\t\t\tscanf(\"%d%d\",&l,&r);\r\n\t\t\tdata X=(data){l,r};\r\n\t\t\tans=0;\r\n\t\t\tset<data>::iterator it=st.lower_bound(X);\r\n\t\t\twhile(1){\r\n\t\t\t\tit=st.lower_bound(X);\r\n\t\t\t\tif(it->l<=X.r&&X.l<=it->r){\r\n\t\t\t\t\t++ans;\r\n\t\t\t\t\tst.erase(it);\r\n\t\t\t\t\tcontinue;\r\n\t\t\t\t}\r\n\t\t\t\tit=st.lower_bound(X);\r\n\t\t\t\tif(it!=st.begin()){\r\n\t\t\t\t\t--it;\r\n\t\t\t\t\tif(it->l<=X.r&&X.l<=it->r){\r\n\t\t\t\t\t\t++ans;\r\n\t\t\t\t\t\tst.erase(it);\r\n\t\t\t\t\t\tcontinue;\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t\tbreak;\r\n\t\t\t}\r\n\t\t\tst.insert(X);\r\n\t\t\tprintf(\"%d\\n\",ans);\r\n\t\t}\r\n\t}\r\n}\r\nint main(){\r\n\tinit();\r\n\treturn 0;\r\n}\r\n<\/code><\/pre>\n\r\n\/\/\u5927\u529b\u5206\u5757\u7684\u5047\u505a\u6cd5\uff0c\u76f4\u5230\u73b0\u5728\u90fd\u4e0d\u61c2bug\u5728\u54ea\u91cc\u3002\u7b2ck\u5757\u8868\u793ak*blck~(k+1)*blck-1\u7684\u503c\u3002 \r\nint n,cnt=0,blck,L[200005],R[200005],rst,TOP;\r\nint V[317],v[100005];\r\nchar ch[4];\r\nbool bo[200005];\r\ninline void prpr(){\r\n blck=sqrt(MAXN);\r\n rst=MAXN%blck;\r\n TOP=MAXN-rst;\r\n memset(V,0,sizeof(V));\r\n memset(v,0,sizeof(v));\r\n memset(bo,0,sizeof(bo));\r\n}\r\nint rt=0;\r\ninline void delB(const int &l,const int &r,const int &x){\r\n for(int i=l;i<=r;++i){\r\n if(V[i]==x){\r\n V[i]=0;\r\n }\r\n }\r\n}\r\ninline void delb(const int &l,const int &r,const int &x){\r\n for(int i=l;i<=r;++i){\r\n if(v[i]==x){\r\n v[i]=0;\r\n }\r\n }\r\n}\r\ninline void del(const int &x){\r\n bo[x]=0;\r\n ++rt;--cnt;\r\n int l=L[x],r=R[x];\r\n if(r\/blck-1<(l\/blck+1)){\r\n delb(l,r,x);\r\n return;\r\n }\r\n delB(l\/blck+1,r\/blck-1,x);\r\n delb(l,(l\/blck+1)*blck-1,x),delb((r\/blck)*blck,r,x);\r\n \r\n}\r\ninline void addb(const int &l,const int &r,const int &x){\r\n for(int i=l;i<=r;++i){\r\n \tif(V[i\/blck]!=x){\r\n \t\tV[i\/blck]=-1;\r\n\t\t} \r\n if(!bo[v[i]]){\r\n v[i]=x;\r\n }else{\r\n del(v[i]);\r\n v[i]=x;\r\n }\r\n }\r\n}\r\ninline void clr(const int &x){\r\n for(int i=x*blck;i<(x+1)*blck;++i){\r\n if(bo[v[i]]){\r\n del(v[i]);\r\n }\r\n }\r\n}\r\ninline void addB(const int &l,const int &r,const int &x){\r\n for(int i=l;i<=r;++i){\r\n if(!V[i]){\r\n V[i]=x;\r\n }else if(V[i]>0){\r\n if(bo[V[i]]){\r\n del(V[i]);\r\n }\r\n V[i]=x;\r\n }else{\r\n clr(i);\r\n V[i]=x;\r\n }\r\n }\r\n}\r\ninline int add(const int &l,const int &r,const int &x){\r\n rt=0;\r\n if(r\/blck-1<(l\/blck+1)){\r\n addb(l,r,x);\r\n return rt;\r\n }\r\n addB(l\/blck+1,r\/blck-1,x);\r\n addb(l,(l\/blck+1)*blck-1,x),addb((r\/blck)*blck,r,x);\r\n return rt;\r\n}\r\nvoid init(){\r\n prpr();\r\n scanf(\"%d\",&n);\r\n int l,r;\r\n for(int i=1;i<=n;++i){\r\n cin>>ch;\r\n if(ch[0]=='B'){\r\n printf(\"%d\\n\",cnt);\r\n }else{\r\n bo[i]=1;++cnt;\r\n scanf(\"%d%d\",&l,&r);\r\n printf(\"%d\\n\",add(l-1,r-1,i));\r\n L[i]=l-1,R[i]=r-1;\r\n }\r\n }\r\n}\r\nint main(){\r\n init();\r\n return 0;\r\n}<\/code><\/pre>\n <\/p>\n","protected":false},"excerpt":{"rendered":"
\u8fd9\u4e00\u9898\u636e\u8bf4\u88ab\u653e\u5728\u4e86\u7ebf\u6bb5\u6811\u8fd9\u4e2a\u6a21\u5757\u4e0b\u9762\u3002 \u6211\u60f3\u4e86\u5f88\u4e45\u5f88\u4e45\u3002\u60f3\u5230\u4e86\u4e00\u79cd\u505a\u6cd5\u3002\u4f46\u662f\u4e00\u5199\u5c31\u611f\u89c9\u5f88\u9ebb\u3002 \u60f3\u7740\u60f3\u7740\uff0c\u7b97\u4e86\u4e00 … <\/p>\n