제출 #714093

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
714093		SlavicG	Pairs (IOI07_pairs)	C++17	100 / 100	326 ms	98644 KiB

pairs

#include "bits/stdc++.h"
using namespace std;
 
#define ll long long

#define          all(v)              v.begin(), v.end()
#define         rall(v)              v.rbegin(),v.rend()
 
#define            pb                push_back
#define          sz(a)               (int)a.size()

#define int long long
const int N = 1e6;
int fen[N];
void modif(int u, int val) {
    for(int i = u + 1; i < N; i += i & -i) fen[i] += val;
}
int query(int l, int r) {
    int ans = 0;
    for(int i = r + 1; i >= 1; i -= i & -i) ans += fen[i];
    for(int i = l; i >= 1; i -= i & -i) ans -= fen[i];
    return ans;
}

const int K = 500, offset = 200;
int ugh[K][K][K];
void modif(int a, int b, int c, int val) {
    for(int i = a + offset; i < K; i += i & -i) {
        for(int j = b + offset; j < K; j += j & -j) {
            for(int f = c + offset; f < K; f += f & -f) {
                ugh[i][j][f] += val;
            }
        }
    }
}
int query(int x1, int y1, int z1, int x2, int y2, int z2) {
    x1 += offset, x2 += offset, y1 += offset, y2 += offset, z1 += offset, z2 += offset;
    int ans = 0;
    for(int i = x2; i >= 1; i -= i & -i) {
        for(int j = y2; j >= 1; j -= j & -j) {
            for(int k = z2; k >= 1; k -= k & -k) {
                ans += ugh[i][j][k];
            }
            for(int k = z1 - 1; k >= 1; k -= k & -k) {
                ans -= ugh[i][j][k];
            }
        }
        for(int j = y1 - 1; j >= 1; j -= j & -j) {
            for(int k = z2; k >= 1; k -= k & -k) {
                ans -= ugh[i][j][k];
            }
            for(int k = z1 - 1; k >= 1; k -= k & -k) {
                ans += ugh[i][j][k];
            }
        }
    }
    for(int i = x1 - 1; i >= 1; i -= i & -i) {
        for(int j = y2; j >= 1; j -= j & -j) {
            for(int k = z2; k >= 1; k -= k & -k) {
                ans -= ugh[i][j][k];
            }
            for(int k = z1 - 1; k >= 1; k -= k & -k) {
                ans += ugh[i][j][k];
            }
        }
        for(int j = y1 - 1; j >= 1; j -= j & -j) {
            for(int k = z2; k >= 1; k -= k & -k) {
                ans += ugh[i][j][k];
            }
            for(int k = z1 - 1; k >= 1; k -= k & -k) {
                ans -= ugh[i][j][k];
            }
        }
    }
    return ans;
}
void solve() {
    int b, n, d, m; cin >> b >> n >> d >> m;
    if(b == 1) {
        vector<int> a(n);
        for(int i = 0; i < n; ++i) cin >> a[i];
        sort(all(a));
        int ans = 0;
        for(int i = 0; i < n; ++i) {
            int j = upper_bound(all(a), a[i] + d) - a.begin();
            ans += j - i - 1;
        } 
        cout << ans << "\n";
    } else if(b == 2) {
        vector<pair<int, int>> a;
        for(int i = 0; i < n; ++i) {
            int x, y; cin >> x >> y;
            a.pb({x - y, x + y});
        }
        queue<int> q;
        sort(all(a));
        int ans = 0;
        for(int i = 0; i < n; ++i) {
            while(!q.empty() && abs(a[i].first - a[q.front()].first) > d) {
                modif(a[q.front()].second, -1);
                q.pop();
            }
            ans += query(a[i].second - d, min(a[i].second + d, N - 2));
            q.push(i);
            modif(a[i].second, 1);
        }
        cout << ans << "\n";
    } else {
        vector<array<int, 4>> a;
        for(int i = 0; i < n; ++i) {
            int x, y, z; cin >> x >> y >> z;
            a.pb({x + y + z, x + y - z, x - y + z, x - y - z});
        }
        sort(all(a));
        queue<int> q;
        int ans = 0;
        for(int i = 0; i < n; ++i) {
            while(!q.empty() && abs(a[i][0] - a[q.front()][0]) > d) {
                modif(a[q.front()][1], a[q.front()][2], a[q.front()][3], -1);
                q.pop();
            }
            ans += query(a[i][1] - d, a[i][2] - d, a[i][3] - d, min(a[i][1] + d, K - offset - 1), min(a[i][2] + d, K - offset - 1), min(a[i][3] + d, K - offset - 1));
            modif(a[i][1], a[i][2], a[i][3], 1);
            q.push(i);
        }
        cout << ans << "\n";
    }
}   
 
int32_t main() {
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int t = 1;
    //cin >> t;
    while(t--) {
        solve();
    }
}

• Subtask 1: 6 / 6
• Subtask 2: 6 / 6
• Subtask 3: 6 / 6
• Subtask 4: 6 / 6
• Subtask 5: 6 / 6
• Subtask 6: 7 / 7
• Subtask 7: 7 / 7
• Subtask 8: 8 / 8
• Subtask 9: 8 / 8
• Subtask 10: 10 / 10
• Subtask 11: 10 / 10
• Subtask 12: 10 / 10
• Subtask 13: 10 / 10