제출 #1092505

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1092505		NguyenPhucThang	사다리꼴 (balkan11_trapezoid)	C++14	0 / 100	641 ms	1560 KiB

trapezoid

#include <bits/stdc++.h>
#define forr(i, a, b) for (int i = (a); i <= (b); i++)
#define ford(i, a, b) for (int i = (a); i >= (b); i--)
#define forf(i, a, b) for (int i = (a); i < (b); i++)
#define fi first
#define se second
#define pb push_back
#define all(v) v.begin(), v.end()
#define ll long long
#define ld long double
#define pii pair<int, int>
#define pll pair<ll, ll>
#define vi vector<int>
#define vii vector<pii>
#define mask(i) (1LL << (i))
#define bit(x, i) (((x) >> (i)) & 1)
#define bp __builtin_popcountll
#define file "test"

using namespace std;
const int base = 31;
const ll mod = 30013;
const ll oo = 1e18;
const int N = 1e6 + 5;

ll dp[N], cnt[N];
struct trapezoid{
	int a, b, c, d;

	bool operator < (const trapezoid &other){
		return min(a, c) < min(other.a, other.c);
	}
} trape[N];


int main()
{
   ios_base::sync_with_stdio(0);
   cin.tie(0);
#ifndef ONLINE_JUDGE
   freopen(file".inp", "r", stdin);
   freopen(file".out", "w", stdout);
#endif
	int n;
	cin >> n;
	forr(i, 1, n) {
		int a, b, c, d;
		cin >> a >> b >> c >> d;
		trape[i] = {a, b, c, d};
	}

	sort(trape + 1, trape + n + 1);

	forr(i, 1, n) cnt[i] = 1;

	forr(i, 1, n){
		dp[i] = 1;
		forr(j, 1, i - 1){
			if (trape[j].b < trape[i].a && trape[j].d < trape[i].c){
				if (dp[j] + 1 > dp[i]) {
					dp[i] = dp[j] + 1;
					cnt[i] = cnt[j];
				}
				else if (dp[j] + 1 == dp[i]){
					cnt[i] += cnt[j];
					cnt[i] %= mod;
				}
			}
		}
	}

	int res1 = 0, res2;
	forr(i, 1, n){
		if (res1 < dp[i]) res1 = dp[i], res2 = cnt[i];
	}
	cout << res1 << " " << res2;
   return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

trapezoid.cpp: In function 'int main()':
trapezoid.cpp:41:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |    freopen(file".inp", "r", stdin);
      |    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
trapezoid.cpp:42:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |    freopen(file".out", "w", stdout);
      |    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
trapezoid.cpp:76:25: warning: 'res2' may be used uninitialized in this function [-Wmaybe-uninitialized]
   76 |  cout << res1 << " " << res2;
      |                         ^~~~

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