Submission #1101032

#TimeUsernameProblemLanguageResultExecution timeMemory
1101032tsengangSterilizing Spray (JOI15_sterilizing)C++17
15 / 100
150 ms4792 KiB
#include <bits/stdc++.h>
#define ll long long
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
using namespace std;
struct segtree{
    int n;
    vector<ll>d;
    segtree(ll n){
        d.resize(4*n);
        build(1,1,n);
    }
    void build(ll v,ll l,ll r){
        if(l==r){
            d[v]=0;
            return;
        }
        ll m=(l+r)/2;
        build(v*2,l,m);
        build(v*2+1,m+1,r);
        d[v]=d[v*2]+d[v*2+1];
    }
    ll query(ll v,ll l,ll r,ll L,ll R){
        if(L>R||l>R||L>r) return 0;
        if(L<=l&&r<=R){
            return d[v];
        }
        ll m=(l+r)/2;
        return query(v*2,l,m,L,R)+query(v*2+1,m+1,r,L,R);
    }
    void update(ll v,ll l,ll r,ll pos,ll val){
        if(pos<l||r<pos) return;
        if(l==r){
            d[v]=val;
            return;
        }
        ll m=(l+r)/2;
        update(v*2,l,m,pos,val);
        update(v*2+1,m+1,r,pos,val);
        d[v]=d[v*2]+d[v*2+1];
    }
};
int main() {
    ll n,q,k;
    cin >> n >> q >> k;
    ll a[n+2];
    for(ll i = 1; i <= n; i++){
        cin >> a[i];
    }
    if(n <= 3000 && q <= 3000){
        while(q--){
            ll s,x,y;
            cin >> s >> x >> y;
            if(s == 1){
                a[x] = y;
            }
            if(s == 2){
                for(ll i = x; i <= y; i++)a[i] /= k;
            }
            if(s == 3){
                ll sum = 0;
                for(ll i = x; i <= y; i++){
                    sum+=a[i];
                }
                cout << sum << '\n';
            }
        }
        return 0;
    }
    if(k == 1){
        segtree gang(n);
        for(ll i = 1 ; i <= n; i++){
            gang.update(1,1,n,i,a[i]);
        }
        while(q--){
            ll s,x,y;
            cin >> s >> x >> y;
            if(s == 1){
                gang.update(1,1,n,x,y);
            }
            if(s == 3){
                cout << gang.query(1,1,n,x,y) << '\n';
            }
        }
    }
}
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...