結果

問題 No.1623 三角形の制作
コンテスト
ユーザー 👑 null
提出日時 2021-05-05 13:18:58
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 1,289 ms / 2,000 ms
コード長 4,267 bytes
コンパイル時間 6,164 ms
コンパイル使用メモリ 491,764 KB
最終ジャッジ日時 2025-01-21 07:16:24
ジャッジサーバーID
（参考情報） 		judge5 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 2
other AC * 19
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function ‘void scans(std::string&)’:
main.cpp:76:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   76 |         scanf("%c", &c);
      |         ~~~~~^~~~~~~~~~
main.cpp:77:28: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   77 |         if (c == '\n')scanf("%c", &c);
      |                       ~~~~~^~~~~~~~~~
main.cpp:80:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   80 |                 scanf("%c", &c);
      |                 ~~~~~^~~~~~~~~~
main.cpp: In function ‘void scanc(char&)’:
main.cpp:86:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   86 |         scanf("%c", &c);
      |         ~~~~~^~~~~~~~~~
main.cpp:89:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   89 |                 scanf("%c", &c);
      |                 ~~~~~^~~~~~~~~~
main.cpp: In function ‘int main()’:
main.cpp:169:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  169 |         scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~
main.cpp:174:30: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  174 |                         scanf("%lld", &a);
      |                         ~~~~~^~~~~~~~~~~~

ソースコード

diff # 

/*
このコード、と～おれ!
Be accepted!
∧＿∧　
（｡･ω･｡)つ━☆・*。
⊂　　 ノ 　　　・゜+.
　しーＪ　　　°。+ *´¨)
 　　　　　　　　　.· ´¸.·*´¨) ¸.·*¨)
		  　　　　　　　　　　(¸.·´ (¸.·'* ☆
*/

#include <cstdio>
#include <algorithm>
#include <string>
#include <cmath>
#include <cstring>
#include <vector>
#include <numeric>
#include <iostream>
#include <random>
#include <map>
#include <unordered_map>
#include <queue>
#include <regex>
#include <functional>
#include <complex>
#include <list>
#include <cassert>
#include <iomanip>
#include <set>
#include <stack>
#include <bitset>
#include <array>
#include <chrono>

//#pragma GCC target("arch=skylake-avx512")
#pragma GCC target("avx2")
//#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse4")
#pragma GCC optimize("unroll-loops")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define repeat(i, n, m) for(int i = n; i < (m); ++i)
#define rep(i, n) for(int i = 0; i < (n); ++i)
#define printynl(a) printf(a ? "yes\n" : "no\n")
#define printyn(a) printf(a ? "Yes\n" : "No\n")
#define printYN(a) printf(a ? "YES\n" : "NO\n")
#define printim(a) printf(a ? "possible\n" : "imposible\n")
#define printdb(a) printf("%.50lf\n", a)
#define printLdb(a) printf("%.50Lf\n", a)
#define printdbd(a) printf("%.16lf\n", a)
#define prints(s) printf("%s\n", s.c_str())
#define all(x) (x).begin(), (x).end()
#define deg_to_rad(deg) (((deg)/360.0L)*2.0L*PI)
#define rad_to_deg(rad) (((rad)/2.0L/PI)*360.0L)
#define Please return
#define AC 0
#define manhattan_dist(a, b, c, d) (abs(a - c) + abs(b - d))

using ll = long long;
using ull = unsigned long long;

constexpr int INF = 1073741823;
constexpr int MINF = -1073741823;
constexpr ll LINF = ll(4661686018427387903);
constexpr ll MOD = 1e9 + 7;
constexpr ll mod = 998244353;
constexpr long double eps = 1e-6;
const long double PI = acosl(-1.0L);

using namespace std;

void scans(string& str) {
	char c;
	str = "";
	scanf("%c", &c);
	if (c == '\n')scanf("%c", &c);
	while (c != '\n' && c != -1 && c != ' ') {
		str += c;
		scanf("%c", &c);
	}
}

void scanc(char& str) {
	char c;
	scanf("%c", &c);
	if (c == -1)return;
	while (c == '\n') {
		scanf("%c", &c);
	}
	str = c;
}

double acot(double x) {
	return PI / 2 - atan(x);
}

ll LSB(ll n) { return (n & (-n)); }

template<typename T>
inline T chmin(T& a, const T& b) {
	if (a > b)a = b;
	return a;
}

template<typename T>
inline T chmax(T& a, const T& b) {
	if (a < b)a = b;
	return a;
}

//cpp_int
#if __has_include(<boost/multiprecision/cpp_int.hpp>)
#include <boost/multiprecision/cpp_int.hpp>
#include <boost/multiprecision/cpp_dec_float.hpp>
using namespace boost::multiprecision;
#else
using cpp_int = ll;
#endif

//atcoder library
#if __has_include(<atcoder/all>)
#include <atcoder/all>
//using namespace atcoder;
#endif

/*
	random_device seed_gen;
	mt19937 engine(seed_gen());
	uniform_int_distribution dist(1, 100);
*/


/*----------------------------------------------------------------------------------*/

/**
 * @brief Cumulative-Sum-2D(二次元累積和)
 * @docs docs/cumulative-sum-2d.md
*/
template< class T >
struct CumulativeSum2D {
	vector< vector< T > > data;

	CumulativeSum2D(int W, int H) : data(W + 1, vector< T >(H + 1, 0)) {}

	void add(int x, int y, T z) {
		++x, ++y;
		if (x >= data.size() || y >= data[0].size()) return;
		data[x][y] += z;
	}

	void build() {
		for (int i = 1; i < data.size(); i++) {
			for (int j = 1; j < data[i].size(); j++) {
				data[i][j] += data[i][j - 1] + data[i - 1][j] - data[i - 1][j - 1];
			}
		}
	}

	T query(int sx, int sy, int gx, int gy) const {
		return (data[gx][gy] - data[sx][gy] - data[gx][sy] + data[sx][sy]);
	}
};
//from: https://ei1333.github.io/library/dp/cumulative-sum-2d.cpp

int main() {

	int n, m = 10002;
	scanf("%d", &n);
	vector r(3, vector<ll>(m / 2));
	rep(i, 3) {
		rep(j, n) {
			ll a;
			scanf("%lld", &a);
			++r[i][a];
		}
	}
	ll ans = 0;

	CumulativeSum2D<ll> cs(m / 2, m);

	rep(i, m / 2) {
		rep(j, m / 2) {
			cs.add(max(i, j), i + j, r[1][i] * r[2][j]);
		}
	}

	cs.build();

	rep(i, m / 2) {
		ans += cs.query(0, i + 1, i + 1, m) * r[0][i];
	}

	printf("%lld\n", ans);

	Please AC;
}
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