結果
問題 | No.165 四角で囲え! |
ユーザー |
|
提出日時 | 2016-12-13 17:38:18 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 257 ms / 5,000 ms |
コード長 | 2,904 bytes |
コンパイル時間 | 1,332 ms |
コンパイル使用メモリ | 104,928 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-12-26 03:37:34 |
合計ジャッジ時間 | 4,806 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 19 |
ソースコード
#include <iostream>#include <vector>#include <algorithm>#include <numeric>#include <array>#include <set>#include <map>#include <queue>#include <tuple>#include <unordered_set>#include <unordered_map>#include <functional>#include <cassert>#define repeat(i,n) for (int i = 0; (i) < int(n); ++(i))#define repeat_from(i,m,n) for (int i = (m); (i) < int(n); ++(i))#define repeat_reverse(i,n) for (int i = (n)-1; (i) >= 0; --(i))#define repeat_from_reverse(i,m,n) for (int i = (n)-1; (i) >= int(m); --(i))#define whole(f,x,...) ([&](decltype((x)) whole) { return (f)(begin(whole), end(whole), ## __VA_ARGS__); })(x)typedef long long ll;using namespace std;template <class T> void setmax(T & a, T const & b) { if (a < b) a = b; }template <class T> void setmin(T & a, T const & b) { if (b < a) a = b; }template <typename X, typename T> auto vectors(X x, T a) { return vector<T>(x, a); }template <typename X, typename Y, typename Z, typename... Zs> auto vectors(X x, Y y, Z z, Zs... zs) { auto cont = vectors(y, z, zs...); return vector<decltype(cont)>(x, cont); }template <typename T>map<T,int> coordinate_compression_map(vector<T> const & xs) {int n = xs.size();vector<int> ys(n);whole(iota, ys, 0);whole(sort, ys, [&](int i, int j) { return xs[i] < xs[j]; });map<T,int> f;for (int i : ys) {if (not f.count(xs[i])) { // make uniqueint j = f.size();f[xs[i]] = j; // f[xs[i]] has a side effect, increasing the f.size()}}return f;}template <typename T>vector<int> apply_compression(map<T,int> const & f, vector<T> const & xs) {int n = xs.size();vector<int> ys(n);repeat (i,n) ys[i] = f.at(xs[i]);return ys;}int main() {int n, b; cin >> n >> b;vector<int> x(n), y(n), p(n); repeat (i,n) cin >> x[i] >> y[i] >> p[i];x = apply_compression(coordinate_compression_map(x), x);y = apply_compression(coordinate_compression_map(y), y);vector<int> j(n);whole(iota, j, 0);whole(sort, j, [&](int i, int j) { return x[i] < x[j]; });int ans = 0;repeat (ry,n+1) repeat (ly,ry) {int li = 0, ri = 0;int lx = 0, rx = 0;int cnt = 0, sum_p = 0;while (rx < n) {++ rx;while (ri < n and x[j[ri]] < rx) {if (ly <= y[j[ri]] and y[j[ri]] < ry) {cnt += 1;sum_p += p[j[ri]];}++ ri;}while (b < sum_p) {++ lx;while (li < n and x[j[li]] < lx) {if (ly <= y[j[li]] and y[j[li]] < ry) {cnt -= 1;sum_p -= p[j[li]];}++ li;}}setmax(ans, cnt);}}cout << ans << endl;return 0;}