Submission #941826

#	Time	Username	Problem	Language	Result	Execution time	Memory
941826		codefox	Sails (IOI07_sails)	C++14	5 / 100	118 ms	59124 KiB

sails

#include<bits/stdc++.h> 

using namespace std;

#define int long long

int N = 1<<20;
vector<int> bpro(2*N, 0);
vector<int> bmin(2*N, 0);

void update(int curr, int l, int r, int ll, int rr, int p)
{
    if (l >= rr || r <= ll) 
    {
        bpro[curr]+=p;
        bmin[curr]+=p;
        return;
    }
    if (l >= ll && r <= rr)
    {
        bpro[curr]+=p+1;
        bmin[curr]+=p+1;
        return;
    }

    p += bpro[curr];
    bpro[curr] = 0;

    int m = (l+r)/2;
    update(curr*2, l, m, ll, rr, p);
    update(curr*2+1, m, r, ll, rr, p);
    bmin[curr] = min(bmin[curr*2], bmin[curr*2+1]);
}

int32_t main()
{
    //freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);

    int n;
    cin >> n;
    vector<vector<int>> height(1e6+1);

    int left = 0;
    int sol = 0;

    for (int i = 0; i < n; i++)
    {
        int a, b;
        cin >> a >> b;
        height[a].push_back(b);
        left += b;
    }
    
    priority_queue<int, vector<int>, less<int>> pq;

    for (int i = 1e6; i > 0; i--)
    {
        int h = bmin[i+N];
        int curr = i+N;
        while (curr>1)
        {
            curr/=2;
            h+=bpro[curr];
        }

        int b = left/i;
        h = b-h;
        for (int ele:height[i]) pq.push(ele); 
        while (pq.size() && h>0)
        {
            update(1, 0, N, i+1-pq.top(), i+1, 0);
            pq.pop();
            h--;
        }
        if (h ==0)
        {
            int u = left%i;
            h = bmin[i+N-u];
            curr = i+N-u;
            while (curr>1)
            {
                curr/=2;
                h+=bpro[curr];
            }
            if (pq.size() && h < left/i)
            {
                update(1, 0, N, i+1-pq.top(), i+1, 0);
                pq.pop();
            }
        }
        /*
        while (pq.size() && pq.top() == i)
        {
            update(1, 0, N, i+1-pq.top(), i+1, 0);
            pq.pop();
        }
        */

        h = bmin[i+N];
        curr = i+N;
        while (curr>1)
        {
            curr/=2;
            h+=bpro[curr];
        }
        sol += (h*(h-1))/2;
        left -= h;
    }
    cout << sol << "\n";

    return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 5
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10
• Subtask 11: 0 / 10