Submission #13784

#	Time	Username	Problem	Language	Result	Execution time	Memory
13784		gs14004	역사적 조사 (JOI14_historical)	C++14	15 / 100	4000 ms	5868 KiB

historic

#include <cstdio>
#include <cmath>
#include <algorithm>
 
using namespace std;
 
int imp[100010];
typedef long long ll;
ll  ans[100010];
int in;
int data[100010];
int bck;
 
struct qr{int ind,l,r; bool operator<(const qr& other) const { return l/bck==other.l/bck?r<other.r:l<other.l; }; } query[100010];
 
int n,q;
 
ll tree[262144];
 
void add(int val){
    int ind=lower_bound(imp,imp+in,val)-imp;
    ind+=131072;
    tree[ind]+=val;
    ind/=2;
    while(ind) tree[ind]=max(tree[ind*2],tree[ind*2+1]), ind/=2;
}
 
void rem(int val){
    int ind=lower_bound(imp,imp+in,val)-imp;
    ind+=131072;
    tree[ind]-=val;
    ind/=2;
    while(ind) tree[ind]=max(tree[ind*2],tree[ind*2+1]), ind/=2;
}
 
int main()
{
    scanf("%d%d",&n,&q); int i; for(i=1;i<=n;++i) scanf("%d",data+i),imp[i]=data[i];
    bck=300;
    sort(imp,imp+n);in=unique(imp,imp+n)-imp;
    int a,b;
    for(i=0;i<q;++i) scanf("%d%d",&a,&b),query[i].ind=i,query[i].l=a,query[i].r=b;
    sort(query,query+q);
    int l=query[0].l, r=query[0].r;
    for(i=l;i<=r;++i) add(data[i]);
    ans[query[0].ind]=tree[1];
    for(i=1;i<q;++i){
        while(query[i].l<=l-1) add(data[--l]);
        while(r+1<=query[i].r) add(data[++r]);
        while(l<query[i].l) rem(data[l++]);
        while(query[i].r<r) rem(data[r--]);
        ans[query[i].ind]=tree[1];
    }
    for(i=0;i<q;++i) printf("%lld\n",ans[i]);
    return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 0 / 25
• Subtask 4: 0 / 60