oj.uz

Submission #354266

# Submission time Handle Problem Language Result Execution time Memory
354266 2021-01-21T16:02:45 Z ryansee Comparing Plants (IOI20_plants) C++14
25 / 100
 656 ms 4332 KB 
#include "plants.h"
 
#include "bits/stdc++.h"
using namespace std;
 
#define FAST ios_base::sync_with_stdio(false); cin.tie(0);
#define pb push_back
#define eb emplace_back
#define ins insert
#define f first
#define s second
#define cbr cerr<<"hi\n"
#define mmst(x, v) memset((x), v, sizeof ((x)))
#define siz(x) ll(x.size())
#define all(x) (x).begin(), (x).end()
#define lbd(x,y) (lower_bound(all(x),y)-x.begin())
#define ubd(x,y) (upper_bound(all(x),y)-x.begin())
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());    //can be used by calling rng() or shuffle(A, A+n, rng)
inline long long rand(long long x, long long y) { return rng() % (y+1-x) + x; } //inclusivesss
string inline to_string(char c) {string s(1,c);return s;} template<typename T> inline T gcd(T a,T b){ return a==0?llabs(b):gcd(b%a,a); }
 
using ll=long long; 
using ld=long double;
#define FOR(i,s,e) for(ll i=s;i<=ll(e);++i)
#define DEC(i,s,e) for(ll i=s;i>=ll(e);--i)
using pi=pair<ll,ll>; using spi=pair<ll,pi>; using dpi=pair<pi,pi>; 
 
long long LLINF = 1e18;
int INF = 1e9+1e6;
#define MAXN (5002)
 
int n, start, k;
ll A[MAXN];
bitset<MAXN> gone;
inline ll cy(ll x) {
	x %= n, x += n, x %= n; return x;
}
vector<int> v[MAXN];
bitset<MAXN> reach[MAXN];

void init(int K, std::vector<int> r) { k=K;
	n=r.size(); if(n>5000) return;
	
	while(1) {
		start = -1;
		FOR(i,0,n-1) if(!gone[i] && r[i] == 0) {
			DEC(jj,i-1,i-k+1) {
				int j = (jj + n) % n;
				if(!gone[j] && r[j] == 0) goto no;
			}
			start = i;
			break;
			no:;
		}
		if(start == -1) break;
		
		FOR(i,start+1,start+k-1) if(!gone[i%n]) {
			A[i%n]=max(A[i%n], A[start]+1);
		}
		
		DEC(i,start-1,start-k+1) if(!gone[(i+n)%n]) {
			A[(i+n)%n] = max(A[(i+n)%n], A[start]+1), -- r[(i+n)%n];
		}
		gone[start] = 1;
	}
	// FOR(i,0,n-1) assert(r[i]==0);
	
	if(n <= 300) {
		FOR(i,0,n-1) {
			ll sm = -LLINF, pos=-1;
			FOR(jj,i+1,i+k-1) { int j=cy(jj);
				if(A[i] > A[j]) {
					if(A[j] > sm) sm = A[j], pos = j;
				} else {
					v[j].eb(i);
				}
			}
			if(~pos) v[i].eb(pos);
		}
		function<void(ll,ll)>dfs=[&](ll x,ll o){
			if(reach[o][x]) return;
			reach[o][x]=1;
			for(auto i:v[x]) dfs(i, o);
		};
		FOR(i,0,n-1) dfs(i, i);
	}
}
int compare_plants(int x, int y) {
	if(n > 5000) return 0;
	if(min(y-x, n-y+x) < k || n > 300 || reach[x][y] || reach[y][x]) return A[x] < A[y] ? 1 : -1;
	else return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 60 ms 3308 KB Output is correct
7 Incorrect 68 ms 3364 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 2 ms 492 KB Output is correct
6 Correct 20 ms 492 KB Output is correct
7 Correct 548 ms 3436 KB Output is correct
8 Correct 4 ms 768 KB Output is correct
9 Correct 20 ms 492 KB Output is correct
10 Correct 527 ms 3564 KB Output is correct
11 Correct 279 ms 3308 KB Output is correct
12 Correct 296 ms 3564 KB Output is correct
13 Correct 656 ms 3436 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 2 ms 492 KB Output is correct
6 Correct 20 ms 492 KB Output is correct
7 Correct 548 ms 3436 KB Output is correct
8 Correct 4 ms 768 KB Output is correct
9 Correct 20 ms 492 KB Output is correct
10 Correct 527 ms 3564 KB Output is correct
11 Correct 279 ms 3308 KB Output is correct
12 Correct 296 ms 3564 KB Output is correct
13 Correct 656 ms 3436 KB Output is correct
14 Incorrect 65 ms 3308 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 66 ms 3308 KB Output is correct
4 Incorrect 88 ms 4332 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 3 ms 620 KB Output is correct
7 Correct 15 ms 1260 KB Output is correct
8 Correct 26 ms 1388 KB Output is correct
9 Correct 16 ms 1260 KB Output is correct
10 Correct 27 ms 1388 KB Output is correct
11 Correct 18 ms 1388 KB Output is correct
12 Correct 22 ms 1260 KB Output is correct
13 Correct 53 ms 1644 KB Output is correct

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Incorrect 6 ms 492 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 60 ms 3308 KB Output is correct
7 Incorrect 68 ms 3364 KB Output isn't correct
8 Halted 0 ms 0 KB -