Submission #970757

#	Time	Username	Problem	Language	Result	Execution time	Memory
970757		Beerus13	Sterilizing Spray (JOI15_sterilizing)	C++14	80 / 100	5022 ms	7504 KiB

sterilizing

#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 1e5 + 5;

struct node {
    ll sum, mx;
    node() {}
    node(ll sum, ll mx) : sum(sum), mx(mx) {}
};

node operator + (node &a, node &b) {
    node res;
    res.sum = a.sum + b.sum;
    res.mx = max(a.mx, b.mx);
    return res;
}

int n, q, k;
node st[N << 2];

void update_point(int u, int val) {
    int id = 1, l = 1, r = n;
    while(l < r) {
        int m = l + r >> 1;
        if(u > m) id = id << 1 | 1, l = m + 1;
        else id = id << 1, r = m;
    }
    st[id] = node(val, val);
    while(id > 1) id = id >> 1, st[id] = st[id << 1] + st[id << 1 | 1];
}

void update(int u, int v, int id = 1, int l = 1, int r = n) {
    if(u > r || v < l || st[id].mx == 0) return;
    if(l == r) {
        st[id].sum /= k;
        st[id].mx /= k;
        return;
    }
    int m = l + r >> 1;
    update(u, v, id << 1, l, m);
    update(u, v, id << 1 | 1, m + 1, r);
    st[id] = st[id << 1] + st[id << 1 | 1];
}

ll query(int u, int v, int id = 1, int l = 1, int r = n) {
    if(u > r || v < l) return 0;
    if(u <= l && r <= v) return st[id].sum;
    int m = l + r >> 1;
    return query(u, v, id << 1, l, m) + query(u, v, id << 1 | 1, m + 1, r);
}

void solve() {
     cin >> n >> q >> k;
     for(int i = 1, x; i <= n; ++i) {
        cin >> x;
        update_point(i, x);
     }
     while(q--) {
        int type, u, v; cin >> type >> u >> v;
        if(type == 1) update_point(u, v);
        if(type == 2) update(u, v);
        if(type == 3) cout << query(u, v) << '\n';
     }
}

signed main() {
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int test = 1;
    // cin >> test;
    while(test--) solve();
    return 0;
}

Compilation message (stderr)

sterilizing.cpp: In function 'void update_point(int, int)':
sterilizing.cpp:25:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   25 |         int m = l + r >> 1;
      |                 ~~^~~
sterilizing.cpp: In function 'void update(int, int, int, int, int)':
sterilizing.cpp:40:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   40 |     int m = l + r >> 1;
      |             ~~^~~
sterilizing.cpp: In function 'long long int query(int, int, int, int, int)':
sterilizing.cpp:49:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   49 |     int m = l + r >> 1;
      |             ~~^~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 75 / 75