제출 #581417

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
581417		Do_you_copy	Pairs (IOI07_pairs)	C++14	60 / 100	195 ms	14516 KiB

pairs

#include <bits/stdc++.h>
#define taskname "test"
#define fi first
#define se second
#define pb push_back
#define faster ios_base::sync_with_stdio(0); cin.tie(0);
using namespace std;

using ll = long long;
using pii = pair <int, int>;

ll min(const ll &a, const ll &b){
    return (a < b) ? a : b;
}

ll max(const ll &a, const ll &b){
    return (a > b) ? a : b;
}

const ll Mod = 1000000007;
const int maxN = 1e5 + 1;
int n, d, m;


struct TPoint{
    int x, y = 0, z = 0;
    bool operator < (const TPoint &other){
        if (x == other.x){
            if (y == other.y) return z < other.z;
            return y < other.y;
        }
        return x < other.x;
    }
};

struct TQuery{
    int x, y, z, t;
    bool operator < (const TQuery &other){
        if (x == other.x) return t < other.t;
        return x < other.x;
    }
};
vector <TQuery> v;
TPoint a[maxN];

struct Node{
    Node *l, *r;
    int val;
    Node(const int &x) : l(nullptr), r(nullptr), val(0){}
};
Node* root[75];

void create(Node *id){
    if (!id->l){
        id->l = new Node(0);
    }
    if (!id->r){
        id->r = new Node(0);
    }
}

void update(Node *id, int l, int r, int i, int x){
    if (r < i || l > i) return;
    if (l == r){
        id->val += x;
        return;
    }
    int m = (l + r) / 2;
    create(id);
    update(id->l, l, m, i, x);
    update(id->r, m + 1, r, i, x);
    id->val = id->l->val + id->r->val;
}

int get(Node *id, int l, int r, int i, int j){
    if (r < i || l > j) return 0;
    if (i <= l && r <= j){
        return id->val;
    }
    int m = (l + r) / 2;
    create(id);
    return get(id->l, l, m, i, j) + get(id->r, m + 1, r, i, j);
}

void Init(){
    int type; cin >> type >> n >> d >> m;
    if (type == 1){
        for (int i = 1; i <= n; ++i) cin >> a[i].x;
        sort(a + 1, a + n + 1);
        ll ans = 0;
        for (int i = 1; i <= n; ++i){
            TPoint tem = {a[i].x - d, 0, 0};
            int k = lower_bound(a + 1, a + n + 1, tem) - a;
            ans += i - k;
        }
        cout << ans;
    }
    if (type == 2){
        ll ans = 0;
        for (int i = 1; i <= n; ++i){
            cin >> a[i].x >> a[i].y;
            v.pb({a[i].x - a[i].y, a[i].x + a[i].y, 0, 1});
            v.pb({a[i].x - a[i].y + d + 1 , a[i].x + a[i].y, 0, -1});
        }
        sort(v.begin(), v.end());
        root[0] = new Node(0);
        for (const auto &i : v){
            if (i.t == -1){
                update(root[0], 1, 150000, i.y, -1);
            }
            else{
                ans += get(root[0], 1, 150000, max(1, i.y - d), i.y + d);
                update(root[0], 1, 150000, i.y, 1);
            }
        }
        cout << ans;
    }
    if (type == 3){
        for (int i = 1; i <= n; ++i) cin >> a[i].x >> a[i].y >> a[i].z;
    }
}

int main(){
    if (fopen(taskname".txt", "r")){
        freopen(taskname".txt", "r", stdin);
    }
    faster
    //freopen(taskname.inp, "r", stdin)
    //freopen(taskname.out, "w", stdout)
    Init();
}

컴파일 시 표준 에러 (stderr) 메시지

pairs.cpp: In function 'int main()':
pairs.cpp:125:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  125 |         freopen(taskname".txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• 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: 0 / 10
• Subtask 11: 0 / 10
• Subtask 12: 0 / 10
• Subtask 13: 0 / 10