Submission #563193

#	Time	Username	Problem	Language	Result	Execution time	Memory
563193		zaneyu	Sterilizing Spray (JOI15_sterilizing)	C++14	100 / 100	246 ms	7744 KiB

sterilizing

/*input
5 10 3
1
2
8
1
3
1 2 5
2 3 5
3 2 5
2 1 4
1 3 2
3 3 5
1 2 4
2 1 2
1 1 4
3 1 5
*/
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef tree<long long, null_type, less_equal<long long>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
#pragma GCC optimize("unroll-loops,no-stack-protector")
//order_of_key #of elements less than x
// find_by_order kth element
typedef long long int ll;
#define ld double
#define pii pair<ll,ll>
#define f first
#define s second
#define pb push_back
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define FILL(n,x) memset(n,x,sizeof(n))
#define ALL(_a) _a.begin(),_a.end()
#define sz(x) (int)x.size()
const ll maxn=5e5+5;
const ll maxlg=__lg(maxn)+2;
const ll INF64=4e18;
const int INF=0x3f3f3f3f;
const ll MOD=1e9+7;
const ld PI=acos(-1);
const ld eps=1e-9;
#define lowb(x) x&(-x)
#define MNTO(x,y) x=min(x,(__typeof__(x))y)
#define MXTO(x,y) x=max(x,(__typeof__(x))y)
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()), c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
#define GET_POS(c,x) (lower_bound(c.begin(),c.end(),x)-c.begin())
#define MP make_pair
ll mult(ll a,ll b){
    ll res=0LL;
    while(b){
        if(b&1) res=(res+a)%MOD;
        a=(a+a)%MOD;
        b>>=1;
    }
    return res%MOD;
}
ll mypow(ll a,ll b){
    ll res=1LL;
    while(b){
        if(b&1) res=res*a%MOD;
        a=a*a%MOD;
        b>>=1;
    }
    return res;
}
struct node{
    int mx=0;
    ll sum=0;
}seg[4*maxn];
int arr[maxn];
node pull(node a,node b){
    node c;
    c.mx=max(a.mx,b.mx);
    c.sum=a.sum+b.sum;
    return c;
}
void build(int idx,int l,int r){
    if(l==r){
        seg[idx].mx=seg[idx].sum=arr[l];
        return;
    }
    int mid=(l+r)/2;
    build(idx*2,l,mid);
    build(idx*2+1,mid+1,r);
    seg[idx]=pull(seg[idx*2],seg[idx*2+1]);
}
void mdf(int idx,int l,int r,int p,int x){
    if(r<p or l>p) return;
    if(l==r){
        seg[idx].mx=seg[idx].sum=x;
        return;
    }
    int mid=(l+r)/2;
    mdf(idx*2,l,mid,p,x);
    mdf(idx*2+1,mid+1,r,p,x);
    seg[idx]=pull(seg[idx*2],seg[idx*2+1]);    
}
void spray(int idx,int l,int r,int ql,int qr,int k){
    if(r<ql or l>qr) return;
    if(seg[idx].mx==0){
        return;
    }
    if(l==r){
        seg[idx].mx/=k;
        seg[idx].sum/=k;
        return;
    }
    int mid=(l+r)/2;
    spray(idx*2,l,mid,ql,qr,k);
    spray(idx*2+1,mid+1,r,ql,qr,k);
    seg[idx]=pull(seg[idx*2],seg[idx*2+1]);    
}
ll query(int idx,int l,int r,int ql,int qr){
    if(r<ql or l>qr) return 0;
    if(ql<=l and r<=qr){
        return seg[idx].sum;
    }
    int mid=(l+r)/2;
    return query(idx*2,l,mid,ql,qr)+query(idx*2+1,mid+1,r,ql,qr);
}
int main(){
    ios::sync_with_stdio(false),cin.tie(0);
    int n,q;
    cin>>n>>q;
    int k;
    cin>>k;
    REP(i,n){
        cin>>arr[i];
    }
    build(1,0,n-1);
    REP(i,q){
        int x,a,b;
        cin>>x>>a>>b;
        --a;
        if(x==2){
            --b;
            if(k==1) continue;
            spray(1,0,n-1,a,b,k);
        }
        else if(x==1){
            mdf(1,0,n-1,a,b);
        }
        else{
            --b;
            cout<<query(1,0,n-1,a,b)<<'\n';
        }
    }
}

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 75 / 75