oj.uz

Submission #354288

# Submission time Handle Problem Language Result Execution time Memory
354288 2021-01-21T16:41:55 Z ryansee Comparing Plants (IOI20_plants) C++14
25 / 100
 4000 ms 4848 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);	
}


 
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 0 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 59 ms 3180 KB Output is correct
7 Incorrect 262 ms 3820 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 20 ms 364 KB Output is correct
7 Correct 555 ms 3412 KB Output is correct
8 Correct 4 ms 492 KB Output is correct
9 Correct 22 ms 364 KB Output is correct
10 Correct 547 ms 3348 KB Output is correct
11 Correct 282 ms 3180 KB Output is correct
12 Correct 301 ms 3436 KB Output is correct
13 Correct 670 ms 3348 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 20 ms 364 KB Output is correct
7 Correct 555 ms 3412 KB Output is correct
8 Correct 4 ms 492 KB Output is correct
9 Correct 22 ms 364 KB Output is correct
10 Correct 547 ms 3348 KB Output is correct
11 Correct 282 ms 3180 KB Output is correct
12 Correct 301 ms 3436 KB Output is correct
13 Correct 670 ms 3348 KB Output is correct
14 Execution timed out 4053 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 0 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 68 ms 3180 KB Output is correct
4 Execution timed out 4030 ms 4848 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #5
11.0 / 11.0

# 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 0 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 15 ms 1004 KB Output is correct
8 Correct 35 ms 1132 KB Output is correct
9 Correct 18 ms 1004 KB Output is correct
10 Correct 35 ms 1132 KB Output is correct
11 Correct 15 ms 1004 KB Output is correct
12 Correct 20 ms 1004 KB Output is correct
13 Correct 75 ms 1644 KB Output is correct

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 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 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 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 59 ms 3180 KB Output is correct
7 Incorrect 262 ms 3820 KB Output isn't correct
8 Halted 0 ms 0 KB -