답안 #123714

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
123714 2019-07-02T05:29:58 Z 윤교준(#3030) Naan (JOI19_naan) C++14
29 / 100
41 ms 7928 KB
#include <bits/stdc++.h>
#define eb emplace_back
using namespace std;
typedef long long ll;
ll gcd(ll a, ll b) { for(;b;a%=b,swap(a,b)){} return a; }

struct FRC {
	FRC(ll a, ll b) : a(a), b(b) { norm(); }
	FRC(ll a) : a(a), b(1) {}
	FRC() : a(0), b(1) {}
	ll a, b; // a / b

	void prt() const { printf("%lld %lld\n", a, b); }
	void norm() {
		if(!a) {
			b = 1;
			return;
		}
		if(b < 0) {
			a = -a;
			b = -b;
		}
		ll g = gcd(abs(a), b);
		if(g) {
			a /= g;
			b /= g;
		}
	}

	ll floor() { return a/b; }

	FRC operator + (const FRC &A) const {
		return FRC(a*A.b + b*A.a, b*A.b);
	}
	FRC operator - (const FRC &A) const {
		return FRC(a*A.b - b*A.a, b*A.b);
	}
	FRC operator * (const FRC &A) const {
		return FRC(a*A.a, b*A.b);
	}
	FRC operator / (const FRC &A) const {
		return FRC(a*A.b, b*A.a);
	}

	bool operator == (const FRC &A) const {
		return a == A.a && b == A.b;
	}
	bool operator < (const FRC &A) const {
		return a*A.b < b*A.a;
	}
	bool operator <= (const FRC &A) const {
		return a*A.b <= b*A.a;
	}
	bool operator > (const FRC &A) const {
		return a*A.b > b*A.a;
	}
	bool operator >= (const FRC &A) const {
		return a*A.b >= b*A.a;
	}
};


const int MAXN = 2005;
const int MAXK = 2005;

ll AS[MAXN][MAXK];
int A[MAXN][MAXK];

FRC pos[MAXN], nd[MAXN];
int O[MAXN];
bitset<MAXN> chk;

int N, K;

FRC nxtF(int i, FRC pv, FRC nd) {
	if(nd <= 0) return pv;
	if(pv >= K) return K+1;
	int j = pv.floor();
	{
		FRC l = FRC(j+1) - pv;
		if(nd <= l * A[i][j+1])
			return pv + nd / A[i][j+1];
		nd = nd - l * A[i][j+1];
		pv = j+1;
	}
	j++;
	if(nd > AS[i][K]-AS[i][j]) return K+1;
	int s = j, e = K-1; for(int m; s < e;) {
		m = (s+e+1) >> 1;
		if(nd <= AS[i][m]-AS[i][j]) e = m-1;
		else s = m;
	}
	nd = nd - (AS[i][s]-AS[i][j]);
	pv = s;
	return pv + nd / A[i][s+1];
}

int main() {
	ios::sync_with_stdio(false);

	cin >> N >> K;
	for(int i = 1; i <= N; i++) {
		for(int j = 1; j <= K; j++) {
			cin >> A[i][j];
			AS[i][j] = AS[i][j-1] + A[i][j];
		}
	}

	for(int i = 1; i <= N; i++) nd[i] = FRC(AS[i][K], N);

	for(int cnt = 1; cnt <= N; cnt++) {
		if(cnt == N) {
			for(int i = 1; i <= N; i++) if(!chk[i]) O[N] = i;
			break;
		}

		FRC mnx[2]; mnx[0] = mnx[1] = K+1;
		int mni[2] = {-1, -1};

		for(int i = 1; i <= N; i++) if(!chk[i]) {
			FRC t = nxtF(i, 0, FRC(AS[i][K]) - nd[i]*(N-cnt));
			int idx = i;
			if(t <= mnx[0]) {
				swap(t, mnx[0]);
				swap(idx, mni[0]);
			}
			if(t <= mnx[1]) {
				swap(t, mnx[1]);
				swap(idx, mni[1]);
			}
		}

		if(0 < mni[0]) {
			int idx = mni[0];
			FRC p = nxtF(idx, pos[cnt-1], nd[idx]);
			if(p <= mnx[1]) {
				chk[idx] = true;
				O[cnt] = idx;
				pos[cnt] = p;
				continue;
			}
		}
		if(0 < mni[1]) {
			int idx = mni[1];
			FRC p = nxtF(idx, pos[cnt-1], nd[idx]);
			if(p <= mnx[0]) {
				chk[idx] = true;
				O[cnt] = idx;
				pos[cnt] = p;
				continue;
			}
		}
		exit(-1);
	}

	for(int i = 1; i < N; i++) pos[i].prt();
	for(int i = 1; i <= N; i++) printf("%d ", O[i]);
	puts("");
	return 0;
}
# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 2 ms 504 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 508 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 2 ms 504 KB Output is correct
15 Correct 3 ms 504 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 3 ms 504 KB Output is correct
4 Correct 3 ms 632 KB Output is correct
5 Correct 3 ms 560 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 3 ms 504 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 3 ms 632 KB Output is correct
15 Correct 3 ms 632 KB Output is correct
16 Correct 3 ms 632 KB Output is correct
17 Correct 3 ms 632 KB Output is correct
18 Correct 3 ms 504 KB Output is correct
19 Correct 3 ms 632 KB Output is correct
20 Correct 5 ms 504 KB Output is correct
21 Correct 3 ms 632 KB Output is correct
22 Correct 3 ms 632 KB Output is correct
23 Correct 2 ms 504 KB Output is correct
24 Correct 3 ms 504 KB Output is correct
25 Correct 3 ms 508 KB Output is correct
26 Correct 2 ms 504 KB Output is correct
27 Correct 3 ms 504 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 2 ms 504 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 508 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 2 ms 504 KB Output is correct
15 Correct 3 ms 504 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 3 ms 504 KB Output is correct
19 Correct 3 ms 632 KB Output is correct
20 Correct 3 ms 560 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 2 ms 504 KB Output is correct
23 Correct 2 ms 504 KB Output is correct
24 Correct 3 ms 504 KB Output is correct
25 Correct 3 ms 504 KB Output is correct
26 Correct 3 ms 504 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 504 KB Output is correct
29 Correct 3 ms 632 KB Output is correct
30 Correct 3 ms 632 KB Output is correct
31 Correct 3 ms 632 KB Output is correct
32 Correct 3 ms 632 KB Output is correct
33 Correct 3 ms 504 KB Output is correct
34 Correct 3 ms 632 KB Output is correct
35 Correct 5 ms 504 KB Output is correct
36 Correct 3 ms 632 KB Output is correct
37 Correct 3 ms 632 KB Output is correct
38 Correct 2 ms 504 KB Output is correct
39 Correct 3 ms 504 KB Output is correct
40 Correct 3 ms 508 KB Output is correct
41 Correct 2 ms 504 KB Output is correct
42 Correct 3 ms 504 KB Output is correct
43 Runtime error 41 ms 7928 KB Execution failed because the return code was nonzero
44 Halted 0 ms 0 KB -