QOJ.ac

QOJ

ID题目提交者结果用时内存语言文件大小提交时间测评时间
#665148#5604. Triangle Containmentenze114514WA 140ms22152kbC++2010.0kb2024-10-22 06:34:392024-10-22 06:34:41

Judging History

你现在查看的是最新测评结果

  • [2024-10-22 06:34:41]
  • 评测
  • 测评结果:WA
  • 用时:140ms
  • 内存:22152kb
  • [2024-10-22 06:34:39]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;

#define pb push_back

const ld pi = 3.14159265358979323846;
const ll INF = 1e18;
const int mod = (int)1e9 + 7;

template<typename T>
T chmax(T a, T b) {
    return a > b ? a : b;
}

template<typename T>
T chmin(T a, T b) {
    return a > b ? b : a;
}

template<typename T>
struct Point{
    T x, y;
    ld eps;

    Point() : x(0), y(0), eps(1e-9) {}
    Point(T x, T y) : x(x), y(y), eps(1e-9) {}

    void set_eps(T eps){
        this->eps = eps;
    }

    Point operator+ (const Point& b){
        return Point(x + b.x, y + b.y);
    }

    Point operator- (const Point& b){
        return Point(x - b.x, y - b.y);
    }

    Point operator- (){
        return Point(-x, -y);
    }

    Point operator* (T t) const{
        return Point(x * t, y * t);
    }

    Point operator/ (T t) const{
        return Point(x / t, y / t);
    }

    Point &operator+=(Point p) &{
        x += p.x;
        y += p.y;
        return *this;
    }

    Point &operator-=(Point p) &{
        x -= p.x;
        y -= p.y;
        return *this;
    }

    Point &operator*=(T v) &{
        x *= v;
        y *= v;
        return *this;
    }

    Point &operator/=(T v) &{
        x /= v;
        y /= v;
        return *this;
    }

    Point &operator=(const Point& b) &{
        x = b.x;
        y = b.y;
        return *this;
    }

    friend Point operator+ (const Point& a, const Point& b){
        return {a.x + b.x, a.y + b.y};
    }

    friend Point operator- (const Point& a, const Point& b){
        return {a.x - b.x, a.y - b.y};
    }

    friend bool operator==(Point a, Point b){
        return a.x == b.x && a.y == b.y;
    }

    int sign(T x){
        if(fabs(x) < eps){
            return 0;
        }
        if(x < 0){
            return -1;
        }
        return 1;
    }

    bool cmp(T x, T y){
        if(fabs(x - y) > eps){
            return 0;
        }
        return 1;
    }

    bool cmp(const Point& a, const Point& b){
        return cmp(a.x, b.x) && cmp(a.y, b.y);
    }

    T dot(const Point& a, const Point& b){
        return a.x * b.x + a.y * b.y;
    }

    T square(Point a){
        return dot(a, a);
    }

    T cross(const Point& a, const Point& b){
        return a.x * b.y - a.y * b.x;
    }

    T cross(const Point& a, const Point& b, const Point& p){
        return (b.x - a.x) * (p.y - a.y) - (b.y - a.y) * (p.x - a.x);
    }

    T get_len(const Point& a){
        return sqrt(dot(a, a));
    }

    T get_angle(const Point& a, const Point& b){
        return acos(dot(a, b) / get_len(a) / get_len(b));
    }

    T area(const Point& a, const Point& b, const Point& c){
        return cross(b - a, c - a);
    }

    Point rotate(const Point& a, T angle){ //两个点就 b - a (b按a转)
        T dx = a.x * cos(angle) + a.y * sin(angle); 
        T dy = -a.x * sin(angle) + a.y * cos(angle);
        return Point(dx, dy);
    }

    Point intersect(const Point& p, const Point& v, const Point& q, const Point& w){
        Point u = p - q;
        T t = cross(w, u) / cross(v, w);
        return p + v * t;
    }

    T point_dist(const Point& a, const Point& b){
        return sqrt((a.x - b.x) * (a.x - b.x) + (a.y - b.y) * (a.y - b.y));
    }

    T line_dist(const Point& a, const Point& b, const Point& p){
        Point u = b - a, v = p - a;
        return fabs(cross(u, v)) / get_len(u);
    }

    T get_slope(const Point& a, const Point& b){
        if(b.y == a.y) return INF;
        if(b.x == a.x) return 0;
        return (b.y - a.y) / (b.x - a.x);
    }

    T circle_intersect(const Point& p1, const Point& p2, const T r1, const T r2){
        ld d = sqrt((p2.x - p1.x) * (p2.x - p1.x) + (p2.y - p1.y) * (p2.y - p1.y));

        if(d > r1 + r2 || d + chmin(r1, r2) <= chmax(r1, r2)){
            return 0;
        }
        else if(d == r1 + r2){
            return 1;
        }
        else{
            return 2;
        }
    }

    T seg_dist(const Point& a, const Point& b, const Point& p){
        if(a == b){
            return get_len(p - a);
        }
        Point u = b - a, v = p - a, w = p - b;

        if(sign(dot(u, v)) < 0){
            return get_len(v);
        }
        if(sign(dot(u, w)) > 0){
            return get_len(w);
        }
        return line_dist(a, b, p);
    }

    Point projection(const Point& a, const Point& b, const Point& p){
        Point v = b - a;
        return a + v * dot(v, p - a) / get_len(v);
    }

    bool on_segment(const Point& a, const Point& b, const Point& p){
        bool u = sign(cross(p - a, p - b)) == 0;
        bool v = sign(dot(p - a, p - b)) <= 0;
        return u && v;
    }

    bool seg_intersection(const Point& a1, const Point& a2, const Point& b1, const Point& b2){
        T c1 = cross(a2 - a1, b1 - a1), c2 = cross(a2 - a1, b2 - a1);
        T c3 = cross(b2 - b1, a2 - b1), c4 = cross(b2 - b1, a1 - b1);
        return sign(c1) * sign(c2) <= 0 && sign(c3) * sign(c4) <= 0;
    }

    friend std::ostream &operator<<(ostream &os, Point p) {
        return os << "(" << p.x << ", " << p.y << ")";
    }
};

const int deg = 180;

bool cmp(vector<ld> a, vector<ld> b){
    return a[0] == b[0] ? a[1] < b[1] : a[0] > b[0];
}

template<class Operation, class Mark>
struct SegTree{
    const int n;
    vector<Operation> op;
    vector<Mark> mrk;
 
    SegTree(int n) : n(n), op(4 << __lg(n)), mrk(4 << __lg(n)){
        function<void(int, int, int)> build = [&](int u, int l, int r){
            op[u] = Operation();
            if(l == r) return;
            int mid = l + r >> 1;
            build(u << 1, l, mid);
            build(u << 1 | 1, mid + 1, r);
            pushup(u);
        };
 
        build(1, 1, n);
    }
 
    void pushup(int u){
        op[u] = op[u << 1] + op[u << 1 | 1];
    }
 
    void modify(int u, const Mark &mk){
        op[u].modify(mk);
        mrk[u].modify(mk);
    }
 
    void pushdown(int u) {
        modify(u << 1, mrk[u]);
        modify(u << 1 | 1, mrk[u]);
        mrk[u] = Mark();
    }
 
    void update(int u, int l, int r, int x, const Operation &v){
        if(l == r){
            op[u] = v;
            return;
        }
        int m = (l + r) >> 1;
        pushdown(u);
 
        if(x <= m){
            update(u << 1, l, m, x, v);
        } 
        else{
            update(u << 1 | 1, m + 1, r, x, v);
        }
        pushup(u);
    }
 
    void update(int u, const Operation &v){
        update(1, 1, n, u, v);
    }
 
    Operation query(int u, int l, int r, int x, int y){
        if(x <= l && r <= y) {
            return op[u];
        }
        
        int m = (l + r) >> 1;
        Operation cur;
        pushdown(u);
        if(x <= m){
            cur = query(u << 1, l, m, x, y);
        }
        if(y > m){
            cur = cur + query(u << 1 | 1, m + 1, r, x, y);
        }
        return cur;
    }
 
    Operation query(int l, int r){
        return query(1, 1, n, l, r);
    }
 
    void range_update(int u, int l, int r, int x, int y, const Mark &v){
        if(l >= x && r <= y){
            modify(u, v);
            return;
        }
 
        int m = (l + r) >> 1;
        pushdown(u);
        if(x <= m){
            range_update(u << 1, l, m, x, y, v);
        }
        if(y > m){
            range_update(u << 1 | 1, m + 1, r, x, y, v);
        }
        pushup(u);
    }
 
    void range_update(int l, int r, const Mark &v){
        return range_update(1, 1, n, l, r, v);
    }
};
 
struct Mark{
    void modify(const Mark &v){

    }
};
 
struct Operation {
    ll sum = 0;
    Operation(ll p = 0){
        sum = p;
    }

    void modify(const Mark &v){

    }
};
 
Operation operator+(Operation a, Operation b){
    return {a.sum + b.sum};
}

void solve() {
    int n;
    ld ox;
    cin >> n >> ox;

    Point<ld> p1 = {0, 0}, p2 = {ox, 0};

    vector<ld> all_angles;
    vector<vector<ld>> a;
    a.push_back({0}); // Placeholder to make indexing 1-based

    for(int i = 0; i < n; i++) {
        ld x, y, z;
        cin >> x >> y >> z;

        Point<ld> p = {x, y};

        // Compute angles
        ld dl = p.get_angle(p - p1, p2 - p1);
        ld dr = p.get_angle(p - p2, p1 - p2);

        // Store angles
        all_angles.push_back(dl);
        all_angles.push_back(dr);

        // Store data
        a.push_back({dl, dr, x, y, z, (ld)(i + 1)});
    }

    // Coordinate Compression
    sort(all_angles.begin(), all_angles.end());
    all_angles.erase(unique(all_angles.begin(), all_angles.end()), all_angles.end());

    // Map angles to indices
    map<ld, int> angle_to_index;
    for(int i = 0; i < all_angles.size(); i++) {
        angle_to_index[all_angles[i]] = i + 1; // 1-based index
    }

    // Update a and b with integer indices
    vector<int> b;
    for(int i = 1; i <= n; i++) {
        a[i][0] = angle_to_index[a[i][0]]; // dl index
        a[i][1] = angle_to_index[a[i][1]]; // dr index
        b.push_back((int)a[i][1]);         // dr indices
    }

    // Now, proceed with integer indices
    sort(a.begin() + 1, a.end(), cmp);
    sort(b.begin(), b.end());
    map<int, int> mp;

    // Build the segment tree
    SegTree<Operation, Mark> tr(all_angles.size() + 1); // Size based on compressed angles
    vector<ll> p(n + 1);

    for(int i = 0; i < b.size(); i++) {
        mp[b[i]] = i + 1;
    }

    for(int i = n; i >= 1; i--) {
        int idx = (int)a[i][5];
        int angle_idx = mp[(int)a[i][1]];
        p[idx] = tr.query(1, angle_idx).sum;
        tr.update(angle_idx, (ll)a[i][4]);
    }

    for(int i = 1; i <= n; i++) {
        cout << p[i] << endl;
    }
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    int t = 1;
    // cin >> t;

    while (t--) {
        solve();
    }

    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3732kb

input:

5 8
-8 1 1
-1 10 2
0 3 4
7 1 8
8 2 16

output:

0
12
0
0
8

result:

ok 5 lines

Test #2:

score: 0
Accepted
time: 0ms
memory: 3728kb

input:

6 6
0 1 1
2 3 10
2 5 100
3 1 1000
3 5 10000
4 5 100000

output:

0
1000
1010
0
1010
1000

result:

ok 6 lines

Test #3:

score: -100
Wrong Answer
time: 140ms
memory: 22152kb

input:

99999 1000000000
500002962 1 1
500025469 1 1
500044229 1 1
500026049 1 1
499983663 1 1
499965983 1 1
499988191 1 1
499987116 1 1
500029240 1 1
499975570 1 1
499973295 1 1
499986404 1 1
500023312 1 1
499964976 1 1
499952153 1 1
500046927 1 1
499951857 1 1
499984523 1 1
500038724 1 1
499991318 1 1
500...

output:

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
...

result:

wrong answer 1st lines differ - expected: '0', found: '1'