oj.uz

Submission #354287

# Submission time Handle Problem Language Result Execution time Memory
354287 2021-01-21T16:38:21 Z ryansee Comparing Plants (IOI20_plants) C++14
25 / 100
 4000 ms 4868 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 (200002)
 
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[306];
bitset<306> reach[306];
ll dist(int x,int y) {
	if(x > y) swap(x, y);
	return min(y-x, n-y+x);	
}
// struct u {
	// int p[MAXN];
	// u() {
		// FOR(i,0,MAXN-1) p[i]=i;
	// }
	// void merge(int x,int y) {
		// p[find(x)]=find(y);
	// }
	// int find(int x) { return p[x] == x ? x : p[x] = find(p[x]); }
	// bool same(int a,int b) { return find(a) == find(b); }
// } u;
 
void init(int K, std::vector<int> r) { k=K;
	n=r.size();
	
	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) {
			FOR(jj,i+1,i+k-1) { int j=cy(jj);
				if(A[i] > A[j]) {
					v[i].eb(j);
				} else {
					v[j].eb(i);
				}
			}
		}
		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 > 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 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 61 ms 3180 KB Output is correct
7 Incorrect 261 ms 3564 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 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 3 ms 364 KB Output is correct
6 Correct 21 ms 364 KB Output is correct
7 Correct 548 ms 3436 KB Output is correct
8 Correct 4 ms 512 KB Output is correct
9 Correct 20 ms 492 KB Output is correct
10 Correct 527 ms 3244 KB Output is correct
11 Correct 281 ms 3308 KB Output is correct
12 Correct 297 ms 3412 KB Output is correct
13 Correct 661 ms 3436 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 3 ms 364 KB Output is correct
6 Correct 21 ms 364 KB Output is correct
7 Correct 548 ms 3436 KB Output is correct
8 Correct 4 ms 512 KB Output is correct
9 Correct 20 ms 492 KB Output is correct
10 Correct 527 ms 3244 KB Output is correct
11 Correct 281 ms 3308 KB Output is correct
12 Correct 297 ms 3412 KB Output is correct
13 Correct 661 ms 3436 KB Output is correct
14 Execution timed out 4054 ms 3052 KB Time limit exceeded
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 364 KB Output is correct
3 Correct 68 ms 3180 KB Output is correct
4 Execution timed out 4054 ms 4868 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 2 ms 364 KB Output is correct
7 Correct 17 ms 1132 KB Output is correct
8 Correct 35 ms 1132 KB Output is correct
9 Correct 19 ms 1132 KB Output is correct
10 Correct 35 ms 1132 KB Output is correct
11 Correct 15 ms 1004 KB Output is correct
12 Correct 18 ms 1004 KB Output is correct
13 Correct 79 ms 1644 KB Output is correct

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Incorrect 6 ms 364 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 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 61 ms 3180 KB Output is correct
7 Incorrect 261 ms 3564 KB Output isn't correct
8 Halted 0 ms 0 KB -