結果
| 問題 | No.165 四角で囲え! |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2017-09-30 20:46:25 |
| 言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 189 ms / 5,000 ms |
| コード長 | 4,683 bytes |
| コンパイル時間 | 12,270 ms |
| コンパイル使用メモリ | 283,516 KB |
| 最終ジャッジ日時 | 2025-01-05 03:03:12 |
|
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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
#pragma GCC optimize ("O3")
#pragma GCC target ("avx")
#include "bits/stdc++.h" // define macro "/D__MAI"
using namespace std;
typedef long long int ll;
#define xprintf(fmt,...) fprintf(stderr,fmt,__VA_ARGS__)
#define debugv(v) {printf("L%d %s > ",__LINE__,#v);for(auto e:v){cout<<e<<" ";}cout<<endl;}
#define debuga(m,w) {printf("L%d %s > ",__LINE__,#m);for(int x=0;x<(w);x++){cout<<(m)[x]<<" ";}cout<<endl;}
#define debugaa(m,h,w) {printf("L%d %s >\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[y][x]<<" ";}cout<<endl;}}
#define ALL(v) (v).begin(),(v).end()
#define repeat(cnt,l) for(auto cnt=0ll;cnt<(l);++cnt)
#define iterate(cnt,b,e) for(auto cnt=(b);cnt!=(e);++cnt)
#define MD 1000000007ll
#define PI 3.1415926535897932384626433832795
#define EPS 1e-12
template<typename T1, typename T2> ostream& operator <<(ostream &o, const pair<T1, T2> p) { o << "(" << p.first << ":" << p.second << ")"; return o; }
template<typename iterator> inline size_t argmin(iterator begin, iterator end) { return distance(begin, min_element(begin, end)); }
template<typename iterator> inline size_t argmax(iterator begin, iterator end) { return distance(begin, max_element(begin, end)); }
template<typename T> T& maxset(T& to, const T& val) { return to = max(to, val); }
template<typename T> T& minset(T& to, const T& val) { return to = min(to, val); }
mt19937_64 randdev(8901016);
inline ll rand_range(ll l, ll h) {
return uniform_int_distribution<ll>(l, h)(randdev);
}
#ifdef __MAI
#define getchar_unlocked getchar
#define putchar_unlocked putchar
#endif
#ifdef __VSCC
#define getchar_unlocked _getchar_nolock
#define putchar_unlocked _putchar_nolock
#endif
namespace {
#define isvisiblechar(c) (0x21<=(c)&&(c)<=0x7E)
class MaiScanner {
public:
template<typename T> void input_integer(T& var) {
var = 0;
T sign = 1;
int cc = getchar_unlocked();
for (; cc<'0' || '9'<cc; cc = getchar_unlocked())
if (cc == '-') sign = -1;
for (; '0' <= cc&&cc <= '9'; cc = getchar_unlocked())
var = (var << 3) + (var << 1) + cc - '0';
var = var*sign;
}
inline int c() { return getchar_unlocked(); }
inline MaiScanner& operator>>(int& var) {
input_integer<int>(var);
return *this;
}
inline MaiScanner& operator>>(long long& var) {
input_integer<long long>(var);
return *this;
}
inline MaiScanner& operator>>(string& var) {
int cc = getchar_unlocked();
for (; !isvisiblechar(cc); cc = getchar_unlocked());
for (; isvisiblechar(cc); cc = getchar_unlocked())
var.push_back(cc);
return *this;
}
template<typename IT> void in(IT begin, IT end) {
for (auto it = begin; it != end; ++it) *this >> *it;
}
};
}
MaiScanner scanner;
ll m, n, bound;
vector<array<int, 3>> points;
ll field[410][410];
int exists[410][410];
int main() {
scanner >> n >> bound;
points.reserve(n);
// 座標圧縮用
map<int, int> zip_x;
map<int, int> zip_y;
repeat(i, n) {
int x, y, p;
scanner >> x >> y >> p;
points.push_back({ x,y,p });
zip_x[x] = zip_y[y] = 0;
}
{
int i = 0;
for (auto& p : zip_x)
p.second += i++;
}
{
int i = 0;
for (auto& p : zip_y)
p.second += i++;
}
// 座圧後,二次元配列にセット
for (auto& a : points) {
int x = a[0] = zip_x[a[0]];
int y = a[1] = zip_y[a[1]];
field[y][x + 1] = a[2];
exists[y][x + 1] = 1;
}
// 累積和
for (int y = 0; y < 405; ++y) {
for (int x = 0; x < 405; ++x) {
field[y][x + 1] += field[y][x];
exists[y][x + 1] += exists[y][x];
}
}
int best = 0;
for (int left = 0; left < 405 - 1; ++left) {
for (int right = left + 1; right < 405; ++right) {
int score = 0;
int count = 0;
// しゃくとり
int bottom = 0;
for (int y = 0; y < 405; ++y) {
score += field[y][right] - field[y][left];
count += exists[y][right] - exists[y][left];
while (score > bound) {
score -= field[bottom][right] - field[bottom][left];
count -= exists[bottom][right] - exists[bottom][left];
++bottom;
}
maxset(best, count);
}
}
}
cout << best << endl;
return 0;
}