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题目链接:
Time Limit: 6000/3000 MS (Java/Others)
Memory Limit: 65536/65536 K (Java/Others)
//#include <bits/stdc++.h>
//有树状数组的
#include <vector> #include <iostream> #include <queue> #include <cmath> #include <map> #include <cstring> #include <algorithm> #include <cstdio> using namespace std; #define Riep(n) for(int i=1;i<=n;i++) #define Riop(n) for(int i=0;i<n;i++) #define Rjep(n) for(int j=1;j<=n;j++) #define Rjop(n) for(int j=0;j<n;j++) #define mst(ss,b) memset(ss,b,sizeof(ss)); typedef long long LL; template<class T> void read(T&num) { char CH; bool F=false; for(CH=getchar();CH<‘0‘||CH>‘9‘;F= CH==‘-‘,CH=getchar()); for(num=0;CH>=‘0‘&&CH<=‘9‘;num=num*10+CH-‘0‘,CH=getchar()); F && (num=-num); } int stk[70], tp; template<class T> inline void print(T p) { if(!p) { puts("0"); return; } while(p) stk[++ tp] = p%10, p/=10; while(tp) putchar(stk[tp--] + ‘0‘); putchar(‘\n‘); } const LL mod=1e9+7; const double PI=acos(-1.0); const LL inf=1e18; const int N=1e4+15; int n,sum[2][2*N],a[2*N],b[2*N],pre[2*N],nex[2*N]; int num,mmax; struct node { int l,r,d; }po[2*N]; int findpos(int x) { int l=1,r=mmax; while(l<=r) { int mid=(l+r)>>1; if(b[mid]<x)l=mid+1; else r=mid-1; } return l; } int lowbit(int x) { return x&(-x); } void update(int x,int y,int flag) { while(x<=mmax) { sum[flag][x]+=y; x+=lowbit(x); } } int query(int x,int flag) { int s=0; while(x>0) { s+=sum[flag][x]; x-=lowbit(x); } return s; } int main() { int t; read(t); int Case=1; while(t--) { mst(sum,0); int x,y,z,d,cnt=1; num=0; mmax=0; read(n); Riep(n) { read(x),read(y),read(z),read(d); if(x+z<y-z)continue; po[cnt].l=y-z; po[cnt].r=x+z; if(d==-1)po[cnt++].d=0; else po[cnt++].d=d; a[++num]=y-z; a[++num]=x+z; } sort(a+1,a+num+1); b[++mmax]=a[1]; for(int i=2;i<=num;i++) { if(a[i]!=a[i-1])b[++mmax]=a[i]; } for(int i=1;i<cnt;i++) { po[i].l=findpos(po[i].l); po[i].r=findpos(po[i].r); update(po[i].l,1,po[i].d); update(po[i].r+1,-1,po[i].d); } for(int i=1;i<=mmax;i++) { pre[i]=max(query(i,1),pre[i-1]); nex[i]=query(i,0); } int ans=0; nex[mmax+1]=0; for(int i=mmax;i>0;i--) { nex[i]=max(nex[i+1],nex[i]); ans=max(ans,pre[i]+nex[i]); } printf("Case #%d:\n",Case++); print(ans); } return 0; }
//#include <bits/stdc++.h> #include <vector> #include <iostream> #include <queue> #include <cmath> #include <map> #include <cstring> #include <algorithm> #include <cstdio> using namespace std; #define Riep(n) for(int i=1;i<=n;i++) #define Riop(n) for(int i=0;i<n;i++) #define Rjep(n) for(int j=1;j<=n;j++) #define Rjop(n) for(int j=0;j<n;j++) #define mst(ss,b) memset(ss,b,sizeof(ss)); typedef long long LL; template<class T> void read(T&num) { char CH; bool F=false; for(CH=getchar();CH<‘0‘||CH>‘9‘;F= CH==‘-‘,CH=getchar()); for(num=0;CH>=‘0‘&&CH<=‘9‘;num=num*10+CH-‘0‘,CH=getchar()); F && (num=-num); } int stk[70], tp; template<class T> inline void print(T p) { if(!p) { puts("0"); return; } while(p) stk[++ tp] = p%10, p/=10; while(tp) putchar(stk[tp--] + ‘0‘); putchar(‘\n‘); } const LL mod=1e9+7; const double PI=acos(-1.0); const LL inf=1e18; const int N=1e4+15; int n,sum[2][2*N],a[2*N],b[2*N],pre[2*N],nex[2*N],sum1[2*N],sum2[2*N]; int num,mmax; struct node { int l,r,d; }po[2*N]; int findpos(int x) { int l=1,r=mmax; while(l<=r) { int mid=(l+r)>>1; if(b[mid]<x)l=mid+1; else r=mid-1; } return l; } int main() { int t; read(t); int Case=1; while(t--) { mst(sum,0); int x,y,z,d,cnt=1; num=0; mmax=0; read(n); Riep(n) { read(x),read(y),read(z),read(d); if(x+z<y-z)continue; po[cnt].l=y-z; po[cnt].r=x+z; if(d==-1)po[cnt++].d=0; else po[cnt++].d=d; a[++num]=y-z; a[++num]=x+z; } sort(a+1,a+num+1); b[++mmax]=a[1]; for(int i=2;i<=num;i++) { if(a[i]!=a[i-1])b[++mmax]=a[i]; } for(int i=1;i<cnt;i++) { po[i].l=findpos(po[i].l); po[i].r=findpos(po[i].r); sum[po[i].d][po[i].l]++; sum[po[i].d][po[i].r+1]--; } for(int i=1;i<=mmax;i++) { sum1[i]=sum1[i-1]+sum[0][i]; sum2[i]=sum2[i-1]+sum[1][i]; nex[i]=sum1[i]; pre[i]=max(pre[i-1],sum2[i]); } int ans=0; nex[mmax+1]=0; for(int i=mmax;i>0;i--) { nex[i]=max(nex[i+1],nex[i]); ans=max(ans,pre[i]+nex[i]); } printf("Case #%d:\n",Case++); print(ans); } return 0; }
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原文地址:http://www.cnblogs.com/zhangchengc919/p/5545588.html