BZOJ 2527 [POI2011] Meteors

我们可以整体二分这玩意。

  

#pragma GCC optimize("-Ofast")
#include <bits/stdc++.h>
#define N 600005
#define LL long long
#define L(x) ((x)&(-x))
#define MID (l+r>>1)
#define Tc template <class T>
using namespace std;
LL T[N];vector<int> o[N];
#define sight(x) ('0'<=x&&x<='9')
inline void read(int &x){
    static char c; static int b;
    for (b=1,c=getchar();!sight(c);c=getchar()) if (c=='-') b=-1;
    for (x=0;sight(c);c=getchar())x=x*10+c-48; x=x*b;
}
int n,m,k,a[N],w[N],l,r,p,cnt,ans[N],b[N],c[N];
struct Que{ int l1,r1,l2,r2,p;}Q[N];
inline void _add(int pos,int x){ while (pos<=m) T[pos]+=x,pos+=L(pos); }
inline LL _que(int pos){ static LL ret; ret=0; while (pos) ret+=T[pos],pos-=L(pos); return ret; }
inline void gen(int l,int r,int x){
    cnt++;
    if (r>=l) Q[cnt].l1=l,Q[cnt].r1=r;
    else  Q[cnt].l1=l,Q[cnt].r1=m,Q[cnt].l2=1,Q[cnt].r2=r;
    Q[cnt].p=x;
}
inline void play(int x,int y,int sign){
    for (int i=x;i<=y;i++){
        _add(Q[i].l1,Q[i].p*sign);_add(Q[i].r1+1,-Q[i].p*sign);
        if (Q[i].l2) _add(Q[i].l2,Q[i].p*sign),_add(Q[i].r2+1,-Q[i].p*sign);
    }
}
bool query(int x){
    static LL now;now=0;
    for (int i=0;i<o[x].size();++i) {
     now+=_que(o[x][i]);
     if (now>=w[x]) return 1;
    } return 0;
}
void work(int l,int r,int ll,int rr){
//    if (l==r) { for (int i=ll;i<=rr;i++) ans[a[i]]=l; return ; }
    if (l+10>r) {
        for (int t=l;t<r;t++) {
            play(t,t,1);
            for (int i=ll;i<=rr;i++) if (ans[a[i]]==0&&query(a[i]))  ans[a[i]]=t;
        }
        for (int i=ll;i<=rr;i++) if (ans[a[i]]==0) ans[a[i]]=r;
        play(l,r-1,-1); return;
    }
    play(l,MID,1);
    int p=ll-1,q=rr;
    for (int i=ll;i<=rr;i++) if (query(a[i])) b[i]=1; else b[i]=0;
    for (int i=ll;i<=rr;i++) if (b[i]) p++,c[p]=a[i]; else c[q]=a[i],q--;
    for (int i=ll;i<=rr;i++) a[i]=c[i];
    work(MID+1,r,p+1,rr);
    play(l,MID,-1);
    work(l,MID,ll,p);
}
Tc void write(T x){if (x<10) {putchar('0'+x); return;} write(x/10); putchar('0'+x%10);}
Tc inline void writeln(T x){ if (x<0) putchar('-'),x*=-1; write(x); putchar('
'); }
Tc inline void writel(T x){ if (x<0) putchar('-'),x*=-1; write(x); putchar(' '); }
int xx;
signed main() {
    read(n); read(m);
    for (int i=1;i<=m;i++) read(xx),o[xx].push_back(i);
    for (int i=1;i<=n;i++) read(w[i]);
    read(k);
    for (int i=1;i<=k;i++){
        read(l),read(r),read(p);
        gen(l,r,p);
    }
    gen(1,n,1e9);
    for (int i=1;i<=n;i++) a[i]=i;
    work(1,k+1,1,n);
    for (int i=1;i<=n;i++) if (ans[i]==k+1) puts("NIE");
    else writeln(ans[i]);
    return 0;
}