oj.uz

Submission #352400

# Submission time Handle Problem Language Result Execution time Memory
352400 2021-01-20T17:43:42 Z ryansee Comparing Plants (IOI20_plants) C++14
14 / 100
 4000 ms 10660 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 (200006)

int n, start;
ll A[MAXN], hmm[MAXN];
bitset<MAXN> gone;
struct u {
	int p[MAXN];
	u() {
		FOR(i,0,MAXN-1) p[i]=i;
	}
	int find(int x) { return p[x] == x ? x : p[x] = find(p[x]); }
	void merge(int x,int y) { p[find(x)]=find(y); }
	bool same(int a,int b) { return find(a)==find(b); }
} u1, u2;

void init(int k, std::vector<int> r) {
	n=r.size(), mmst(hmm, -1);
	
	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]) {
			// assert(A[start]+1 > A[i%n]);
			A[i%n]=max(A[i%n], A[start]+1), hmm[i%n]=start;
		}
		
		DEC(i,start-1,start-k+1) if(!gone[(i+n)%n]) {
			// assert(A[start]+1 >= A[(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);
	// FOR(i,0,n-1) cerr<<A[i]<<' '; cerr<<'\n';
	FOR(i,0,n-1) if(A[i]==0) { start = i; break; }
	for(ll now=start;;) {
		++ now;
		while(A[now%n]) {
			u1.merge(now%n, (now-1+n)%n);
			++ now;
		}
		if(now%n == start) break;
	}
	
	for(ll now=start;;) {
		-- now;
		while(A[(now+n)%n]) {
			// cerr<<"merge: "<<(now+n)%n<<' '<<(now+1+n)%n<<'\n';
			u2.merge((now+n)%n, (now+1+n)%n);
			-- now;
		}
		if((now+n)%n == start) break;
	}
}

int compare_plants(int x, int y) {
	// if(!u1.same(x,y) && !u2.same(x,y)) return 0;
	return A[x] < A[y] ? 1 : -1;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3436 KB Output is correct
2 Correct 2 ms 3436 KB Output is correct
3 Correct 2 ms 3436 KB Output is correct
4 Incorrect 2 ms 3436 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3436 KB Output is correct
2 Correct 2 ms 3436 KB Output is correct
3 Correct 2 ms 3436 KB Output is correct
4 Correct 2 ms 3436 KB Output is correct
5 Correct 3 ms 3436 KB Output is correct
6 Correct 21 ms 3564 KB Output is correct
7 Correct 549 ms 6508 KB Output is correct
8 Correct 4 ms 3564 KB Output is correct
9 Correct 23 ms 3564 KB Output is correct
10 Correct 532 ms 6508 KB Output is correct
11 Correct 281 ms 6252 KB Output is correct
12 Correct 299 ms 6508 KB Output is correct
13 Correct 661 ms 6508 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3436 KB Output is correct
2 Correct 2 ms 3436 KB Output is correct
3 Correct 2 ms 3436 KB Output is correct
4 Correct 2 ms 3436 KB Output is correct
5 Correct 3 ms 3436 KB Output is correct
6 Correct 21 ms 3564 KB Output is correct
7 Correct 549 ms 6508 KB Output is correct
8 Correct 4 ms 3564 KB Output is correct
9 Correct 23 ms 3564 KB Output is correct
10 Correct 532 ms 6508 KB Output is correct
11 Correct 281 ms 6252 KB Output is correct
12 Correct 299 ms 6508 KB Output is correct
13 Correct 661 ms 6508 KB Output is correct
14 Execution timed out 4051 ms 6180 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3436 KB Output is correct
2 Correct 2 ms 3436 KB Output is correct
3 Correct 69 ms 7916 KB Output is correct
4 Execution timed out 4089 ms 10660 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3436 KB Output is correct
2 Correct 3 ms 3436 KB Output is correct
3 Incorrect 2 ms 3436 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3436 KB Output is correct
2 Correct 2 ms 3436 KB Output is correct
3 Incorrect 2 ms 3436 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3436 KB Output is correct
2 Correct 2 ms 3436 KB Output is correct
3 Correct 2 ms 3436 KB Output is correct
4 Incorrect 2 ms 3436 KB Output isn't correct
5 Halted 0 ms 0 KB -