oj.uz

답안 #79045

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
79045 2018-10-11T00:42:15 Z psmao Sailing Race (CEOI12_race) C++14
5 / 100
 175 ms 2912 KB 
#include <bits/stdc++.h>
using namespace std;

#define fo(i,s,t) for(int i = s; i <= t; ++ i)
#define fd(i,s,t) for(int i = s; i >= t; -- i)
#define bf(i,s) for(int i = head[s]; i; i = e[i].next)
#define mp make_pair
#define fi first
#define se second
#define pii pair<int,int>
#define pb push_back
#define VI vector<int>
#define sf scanf
#define pf printf
#define fp freopen
#define SZ(x) ((int)(x).size())
#ifdef MPS
#define D(x...) printf(x)
#else
#define D(x...)
#endif
typedef long long ll;
typedef double db;
typedef unsigned long long ull;
const int inf = 1<<30;
const ll INF = 1ll<<60;
const db Inf = 1e20;
const db eps = 1e-9;

void gmax(int &a,int b){a = (a > b ? a : b);}
void gmin(int &a,int b){a = (a < b ? a : b);}

const int maxn = 505;

int f[maxn][maxn], g[maxn][maxn], n, sub;
VI adj[maxn];

int main()
{
	#ifdef MPS
		fp("1.in","r",stdin);
		fp("1.out","w",stdout);
		db mps = clock();
	#endif
	sf("%d%d",&n,&sub);
	fo(i,1,n)
	{
		int x;
		while(1)
		{
			sf("%d",&x);
			if(!x) break;
			adj[i].pb(x);
		}
	}
	fo(len,2,n)
	{
		fo(i,1,n-len+1)
		{
			int j = i+len-1;
			for(auto k : adj[i])
			{
				if(k >= i && k < j) 
					gmax(f[i][j], 1 + max(f[k][j], g[k][i]));
				if(!(k > i && k <= j))
					gmax(g[i][j], 1 + max(g[k][j], f[k][i]));
			}
			for(auto k : adj[j])
			{
				if(!(k > i && k <= j))
					gmax(f[j][i], 1 + max(f[k][i], g[k][j]));
				if(k >= i && k < j)
					gmax(g[j][i], 1 + max(g[k][i], f[k][j]));
			}
		}
	}
	int ans = 0, target;
	fo(s,1,n) 
		for(auto t : adj[s])
		{
			if(max(f[s][t], g[s][t]) + 1 > ans)
			{
				ans = max(f[s][t], g[s][t]);
				target = s;
			}
			// gmax(ans, max(f[s][t], g[s][t]));
		}
	pf("%d\n%d\n",ans-1,target);
	#ifdef MPS
		pf("Time Elapsed: %.3fms\n",clock()-mps);
	#endif
	return 0;
}

Compilation message

race.cpp: In function 'int main()':
race.cpp:45:4: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  sf("%d%d",&n,&sub);
    ^
race.cpp:51:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    sf("%d",&x);
      ^

Subtask #1
5.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 628 KB Output isn't correct
3 Incorrect 2 ms 668 KB Output isn't correct
4 Incorrect 2 ms 668 KB Output isn't correct
5 Incorrect 3 ms 668 KB Output isn't correct
6 Incorrect 3 ms 668 KB Output isn't correct
7 Incorrect 3 ms 772 KB Output isn't correct
8 Incorrect 3 ms 788 KB Output isn't correct
9 Incorrect 4 ms 920 KB Output isn't correct
10 Incorrect 8 ms 976 KB Output isn't correct
11 Incorrect 5 ms 976 KB Output isn't correct
12 Incorrect 11 ms 1380 KB Output isn't correct
13 Incorrect 20 ms 1760 KB Output isn't correct
14 Incorrect 32 ms 2144 KB Output isn't correct
15 Incorrect 98 ms 2656 KB Output isn't correct
16 Incorrect 148 ms 2788 KB Output isn't correct
17 Incorrect 108 ms 2788 KB Output isn't correct
18 Incorrect 43 ms 2788 KB Output isn't correct
19 Incorrect 153 ms 2844 KB Output isn't correct
20 Incorrect 175 ms 2912 KB Output isn't correct