penguin8331's Library

This documentation is automatically generated by online-judge-tools/verification-helper

View the Project on GitHub penguin8331/library

:heavy_check_mark: test/AOJ/DSL_4_A.test.cpp

Depends on

Code

#define PROBLEM "https://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=DSL_4_A"
#include "../../template/template.hpp"
#include "../../others/compress2d.hpp"

int main() {
    int N;
    cin >> N;
    vector<long long> X1(N), Y1(N), X2(N), Y2(N);
    for (int i = 0; i < N; i++) {
        cin >> X1.at(i) >> Y1.at(i) >> X2.at(i) >> Y2.at(i);
    }
    vector<long long> X = compress(X1, X2);
    vector<long long> Y = compress(Y1, Y2);
    int w = (int)X.size();
    int h = (int)Y.size();
    vector<vector<int>> G(w, vector<int>(h));
    for (int i = 0; i < N; i++) {
        G[X1[i]][Y1[i]]++;
        G[X2[i]][Y2[i]]++;
        G[X1[i]][Y2[i]]--;
        G[X2[i]][Y1[i]]--;
    }
    for (int x = 1; x < w; x++) {
        for (int y = 0; y < h; y++) {
            G[x][y] += G[x - 1][y];
        }
    }
    for (int x = 0; x < w; x++) {
        for (int y = 1; y < h; y++) {
            G[x][y] += G[x][y - 1];
        }
    }
    long long ans = 0;
    for (int x = 0; x < w - 1; x++) {
        for (int y = 0; y < h - 1; y++) {
            if (G[x][y]) {
                ans += (X[x + 1] - X[x]) * (Y[y + 1] - Y[y]);
            }
        }
    }
    cout << ans << endl;
}
#line 1 "test/AOJ/DSL_4_A.test.cpp"
#define PROBLEM "https://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=DSL_4_A"
#line 2 "template/template.hpp"
#include <bits/stdc++.h>
#line 3 "template/macro.hpp"

#define overload3(_1, _2, _3, name, ...) name
#define all1(v) std::begin(v), std::end(v)
#define all2(v, a) std::begin(v), std::begin(v) + a
#define all3(v, a, b) std::begin(v) + a, std::begin(v) + b
#define all(...) overload3(__VA_ARGS__, all3, all2, all1)(__VA_ARGS__)
#define rall1(v) std::rbegin(v), std::rend(v)
#define rall2(v, a) std::rbegin(v), std::rbegin(v) + a
#define rall3(v, a, b) std::rbegin(v) + a, std::rbegin(v) + b
#define rall(...) overload3(__VA_ARGS__, rall3, rall2, rall1)(__VA_ARGS__)
#define elif else if
#define updiv(N, X) (((N) + (X) - 1) / (X))
#define sigma(a, b) (((a) + (b)) * ((b) - (a) + 1) / 2)
#define INT(...)     \
    int __VA_ARGS__; \
    scan(__VA_ARGS__)
#define LL(...)     \
    ll __VA_ARGS__; \
    scan(__VA_ARGS__)
#define STR(...)        \
    string __VA_ARGS__; \
    scan(__VA_ARGS__)
#define CHR(...)      \
    char __VA_ARGS__; \
    scan(__VA_ARGS__)
#define DOU(...)        \
    double __VA_ARGS__; \
    scan(__VA_ARGS__)
#define LD(...)     \
    ld __VA_ARGS__; \
    scan(__VA_ARGS__)
#define pb push_back
#define eb emplace_back
#line 3 "template/alias.hpp"

using ll = long long;
using ld = long double;
using pii = std::pair<int, int>;
using pll = std::pair<ll, ll>;
constexpr int inf = 1 << 30;
constexpr ll INF = 1LL << 60;
constexpr int dx[8] = {1, 0, -1, 0, 1, -1, 1, -1};
constexpr int dy[8] = {0, 1, 0, -1, 1, 1, -1, -1};
constexpr int mod = 998244353;
constexpr int MOD = 1e9 + 7;
#line 3 "template/func.hpp"

template <typename T>
inline bool chmax(T& a, T b) { return ((a < b) ? (a = b, true) : (false)); }
template <typename T>
inline bool chmin(T& a, T b) { return ((a > b) ? (a = b, true) : (false)); }
template <typename T, typename U>
std::ostream &operator<<(std::ostream &os, const std::pair<T, U> &p) {
    os << p.first << " " << p.second;
    return os;
}
template <typename T, typename U>
std::istream &operator>>(std::istream &is, std::pair<T, U> &p) {
    is >> p.first >> p.second;
    return is;
}
template <typename T>
std::ostream &operator<<(std::ostream &os, const std::vector<T> &v) {
    for (auto it = std::begin(v); it != std::end(v);) {
        os << *it << ((++it) != std::end(v) ? " " : "");
    }
    return os;
}
template <typename T>
std::istream &operator>>(std::istream &is, std::vector<T> &v) {
    for (T &in : v) {
        is >> in;
    }
    return is;
}
inline void scan() {}
template <class Head, class... Tail>
inline void scan(Head &head, Tail &...tail) {
    std::cin >> head;
    scan(tail...);
}
template <class T>
inline void print(const T &t) { std::cout << t << '\n'; }
template <class Head, class... Tail>
inline void print(const Head &head, const Tail &...tail) {
    std::cout << head << ' ';
    print(tail...);
}
template <class... T>
inline void fin(const T &...a) {
    print(a...);
    exit(0);
}
#line 3 "template/util.hpp"

struct IOSetup {
    IOSetup() {
        std::cin.tie(nullptr);
        std::ios::sync_with_stdio(false);
        std::cout.tie(0);
        std::cout << std::fixed << std::setprecision(12);
        std::cerr << std::fixed << std::setprecision(12);
    }
} IOSetup;
#line 3 "template/debug.hpp"

#ifdef LOCAL
#include <dump.hpp>
#else
#define debug(...)
#endif
#line 8 "template/template.hpp"
using namespace std;
#line 3 "others/compress2d.hpp"

template <typename T>
vector<T> compress(vector<T> &C1, vector<T> &C2) {
    vector<T> vals;
    int N = (int)C1.size();
    for (int i = 0; i < N; i++) {
        for (T d = 0; d <= 1; d++) {
            T tc1 = C1[i] + d;
            T tc2 = C2[i] + d;
            vals.push_back(tc1);
            vals.push_back(tc2);
        }
    }
    sort(vals.begin(), vals.end());
    vals.erase(unique(vals.begin(), vals.end()), vals.end());
    for (int i = 0; i < N; i++) {
        C1[i] = lower_bound(vals.begin(), vals.end(), C1[i]) - vals.begin();
        C2[i] = lower_bound(vals.begin(), vals.end(), C2[i]) - vals.begin();
    }
    return vals;
}
#line 4 "test/AOJ/DSL_4_A.test.cpp"

int main() {
    int N;
    cin >> N;
    vector<long long> X1(N), Y1(N), X2(N), Y2(N);
    for (int i = 0; i < N; i++) {
        cin >> X1.at(i) >> Y1.at(i) >> X2.at(i) >> Y2.at(i);
    }
    vector<long long> X = compress(X1, X2);
    vector<long long> Y = compress(Y1, Y2);
    int w = (int)X.size();
    int h = (int)Y.size();
    vector<vector<int>> G(w, vector<int>(h));
    for (int i = 0; i < N; i++) {
        G[X1[i]][Y1[i]]++;
        G[X2[i]][Y2[i]]++;
        G[X1[i]][Y2[i]]--;
        G[X2[i]][Y1[i]]--;
    }
    for (int x = 1; x < w; x++) {
        for (int y = 0; y < h; y++) {
            G[x][y] += G[x - 1][y];
        }
    }
    for (int x = 0; x < w; x++) {
        for (int y = 1; y < h; y++) {
            G[x][y] += G[x][y - 1];
        }
    }
    long long ans = 0;
    for (int x = 0; x < w - 1; x++) {
        for (int y = 0; y < h - 1; y++) {
            if (G[x][y]) {
                ans += (X[x + 1] - X[x]) * (Y[y + 1] - Y[y]);
            }
        }
    }
    cout << ans << endl;
}
Back to top page