oj.uz

Submission #1048566

# Submission time Handle Problem Language Result Execution time Memory
1048566 2024-08-08T08:25:50 Z LittleOrange Ancient Books (IOI17_books) C++17
50 / 100
 107 ms 94496 KB 
#include "books.h"
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const ll big = 1e18;
struct obj{
	ll i,w;
	bool operator<(const obj &o)const{
		return w>o.w;
	}
};
struct BIT{
	ll n;
	vector<ll> a;
	BIT(ll N):n(N),a(N+5,0){}
	void add(ll i, ll v){
		for(;i<=n;i+=i&-i) a[i] += v;
	}
	ll get(ll i){
		ll v = 0;
		for(;i>0;i-=i&-i) v += a[i];
		return v;
	}
};
struct segtree{
	ll n;
	vector<ll> a;
	segtree(ll N):n(N),a(N<<2,big){}
	void mod(ll i, ll l, ll r, ll ql, ll qr, ll x){
		if(ql<=l&&r<=qr) a[i] = min(a[i],x);
		else{
			ll m = l+r>>1;
			if(ql<=m) mod(i<<1,l,m,ql,qr,x);
			if(qr>m) mod(i<<1|1,m+1,r,ql,qr,x);
		}
	}
	ll get(ll i, ll l, ll r, ll x){
		if (l == r) return a[i];
		else{
			ll m = l+r>>1;
			if (x<=m) return min(a[i],get(i<<1,l,m,x));
			else return min(a[i],get(i<<1|1,m+1,r,x));
		}
	}
};
long long minimum_walk(std::vector<int> p, int s) {
	ll ans = 0;
	ll n = p.size();
	ll gpc = 0;
	vector<ll> gp(n,-1);
	vector<ll> L,R;
	vector<vector<ll>> gps;
	for(ll i = 0;i<n;i++){
		if (gp[i]==-1){
			ll cur = gpc++;
			gps.emplace_back();
			L.push_back(n);
			R.push_back(0);
			ll x = i;
			do{
				L[cur] = min(x,L[cur]);
				R[cur] = max(x,R[cur]);
				gp[x] = cur;
				gps[cur].push_back(x);
				ans += abs(p[x]-x);
				x = p[x];
			} while(x!=i);
		}
	}
	vector<ll> v(n,0);
	for(ll i : L) v[i]++;
	for(ll i : R) v[i]--;
	for(ll i = 1;i<n;i++) v[i] += v[i-1];
	ll rf = n-1;
	while(rf&&p[rf]==rf) rf--;
	for(ll i = 0;i<rf;i++) if(!v[i]) ans += 2;
	ll cL = s, cR = s;
	for(ll i : L) if(i<=s) cL=min(cL,i);
	for(ll i : R) if(i>=s) cR=max(cR,i);
	/*
	vector<ll> dis(n,n);
	segtree t(n);
	priority_queue<obj> q;
	q.push({s,0});
	while(!q.empty()){
		auto [i,w] = q.top();q.pop();
		w = min(w,t.get(1,0,n-1,i));
		if (dis[i]<=w) continue;
		dis[i] = w;
		q.push({L[gp[i]],w});
		q.push({R[gp[i]],w});
		t.mod(1,0,n-1,L[gp[i]],R[gp[i]],w);
		if(i>0) q.push({i-1,w+1});
		if(i<n-1) q.push({i+1,w+1});
	}
	ans += min(dis[cL],dis[cR])*2;*/
	if (s!=0&&n<=1000){
		ll m = gpc;
		vector<vector<ll>> con(m,vector<ll>(m,n));
		for(ll i = 0;i<m;i++){
			for(ll j = 0;j<m;j++){
				for(ll x : gps[j]){
					for(ll y : gps[i]){
						con[i][j] = min(con[i][j],abs(x-y));
					}
					if(L[i]<=x&&x<=R[i]) con[i][j] = 0;
				}
			}
		}
		for(ll i = 0;i<m;i++){
			for(ll j = i;j<m;j++){
				ll o = con[i][j]+con[j][i];
				con[i][j] = con[j][i] = o;
			}
		}
		vector<ll> dis(m,n);
		priority_queue<obj> q;
		q.push({gp[s],0});
		while(!q.empty()){
			auto [i,w] = q.top();q.pop();
			if(dis[i]<=w) continue;
			dis[i] = w;
			for(ll j = 0;j<m;j++){
				q.push({j,w+con[i][j]});
			}
		}
		ll add = min(dis[gp[cL]],dis[gp[cR]]);
		ans += add;
	}
	return ans;
}

Compilation message

books.cpp: In member function 'void segtree::mod(ll, ll, ll, ll, ll, ll)':
books.cpp:32:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   32 |    ll m = l+r>>1;
      |           ~^~
books.cpp: In member function 'll segtree::get(ll, ll, ll, ll)':
books.cpp:40:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   40 |    ll m = l+r>>1;
      |           ~^~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 78 ms 35432 KB Output is correct
31 Correct 80 ms 35108 KB Output is correct
32 Correct 107 ms 94496 KB Output is correct
33 Correct 106 ms 81652 KB Output is correct
34 Correct 107 ms 80108 KB Output is correct
35 Correct 105 ms 74736 KB Output is correct
36 Correct 101 ms 48812 KB Output is correct
37 Correct 67 ms 37128 KB Output is correct
38 Correct 66 ms 34908 KB Output is correct
39 Correct 66 ms 34640 KB Output is correct
40 Correct 67 ms 32972 KB Output is correct
41 Correct 86 ms 32892 KB Output is correct
42 Correct 76 ms 32744 KB Output is correct
43 Correct 106 ms 79864 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 52 ms 13252 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3165'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 78 ms 35432 KB Output is correct
31 Correct 80 ms 35108 KB Output is correct
32 Correct 107 ms 94496 KB Output is correct
33 Correct 106 ms 81652 KB Output is correct
34 Correct 107 ms 80108 KB Output is correct
35 Correct 105 ms 74736 KB Output is correct
36 Correct 101 ms 48812 KB Output is correct
37 Correct 67 ms 37128 KB Output is correct
38 Correct 66 ms 34908 KB Output is correct
39 Correct 66 ms 34640 KB Output is correct
40 Correct 67 ms 32972 KB Output is correct
41 Correct 86 ms 32892 KB Output is correct
42 Correct 76 ms 32744 KB Output is correct
43 Correct 106 ms 79864 KB Output is correct
44 Incorrect 52 ms 13252 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3165'
45 Halted 0 ms 0 KB -