Submission #711237

#	Time	Username	Problem	Language	Result	Execution time	Memory
711237		youngyojun	Naan (JOI19_naan)	C++17	100 / 100	349 ms	79840 KiB

naan

#include <bits/stdc++.h>
#define fi first
#define se second
#define allv(V) (V).begin(),(V).end()
using namespace std;
typedef long long ll;
typedef __int128_t lll;
typedef pair<ll, ll> pll;
lll operator * (pll a, pll b) { return lll(a.fi)*b.se - lll(a.se)*b.fi; }

pll B[2005][2005];
ll A[2005];

int C[2005];

int N, L;

int main() {
	ios_base::sync_with_stdio(0); cin.tie(0);

	cin >> N >> L;
	for(int i = 0; i < N; i++) {
		for(int j = 0; j < L; j++) {
			ll x; cin >> x;
			A[j+1] = A[j] + x;
		}
		ll S = A[L];
		int k = 1, n = 0;
		while(k < N) {
			while(A[n+1]*N <= S*k) n++;
			ll u = S*k - A[n]*N, d = (A[n+1]-A[n])*N;
			B[i][k++] = {u + d*n, d};
		}
	}

	vector<int> V(N); iota(allv(V), 0);
	for(int k = 1; k < N; k++)
		swap(V[k-1], *min_element(k-1+allv(V), [&](int a, int b) {
			return B[a][k] * B[b][k] < 0;
		}));
	
	for(int k = 1; k < N; k++) {
		pll p = B[V[k-1]][k];
		cout << p.fi << ' ' << p.se << '\n';
	}
	for(int v : V) cout << v+1 << ' ';
	cout << '\n';

	return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 24 / 24
• Subtask 3: 71 / 71