Submission #114281

#	Time	Username	Problem	Language	Result	Execution time	Memory
114281		popovicirobert	Sails (IOI07_sails)	C++14	50 / 100	1073 ms	1996 KiB

sails

#include <bits/stdc++.h>
#define lsb(x) (x & (-x))
#define ll long long
#define ull unsigned long long
// 217
// 44

using namespace std;

const int MAXH = (int) 1e5;


int main() {
    //ifstream cin("A.in");
    //ofstream cout("A.out");
    int i, n;
    ios::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);

    cin >> n;

    vector <int> h(n + 1), k(n + 1), ord(n + 1);
    for(i = 1; i <= n; i++) {
        cin >> h[i] >> k[i];
        ord[i] = i;
    }

    sort(next(ord.begin()), ord.end(), [&](const int &a, const int &b) {

            return h[a] < h[b];

         });

    vector <int> cnt(MAXH + 1);

    for(i = 1; i <= n; i++) {
        int val = cnt[h[ord[i]] - k[ord[i]] + 1];

        int pos = h[ord[i]];
        while(cnt[pos] != val) {
            k[ord[i]]--;
            cnt[pos--]++;
        }

        int res = 0;
        for(int step = 1 << 16; step; step >>= 1) {
            if(res + step <= MAXH && cnt[res + step] > val) {
                res += step;
            }
        }

        while(k[ord[i]]--) {
            cnt[++res]++;
        }

    }

    ll ans = 0;

    for(i = 1; i <= MAXH; i++) {
        ans += 1LL * cnt[i] * (cnt[i] - 1) / 2;
    }

    cout << ans;

    //cin.close();
    //cout.close();
    return 0;
}

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