oj.uz

Submission #563860

# Submission time Handle Problem Language Result Execution time Memory
563860 2022-05-18T07:35:24 Z errorgorn Wild Boar (JOI18_wild_boar) C++17
12 / 100
 211 ms 96868 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define ii pair<int,int>
#define i3 tuple<int,int,int>
#define i4 tuple<int,int,int,int>
#define fi first
#define se second
//#define endl '\n'

#define puf push_front
#define pof pop_front
#define pub push_back
#define pob pop_back
#define lb lower_bound
#define ub upper_bound

#define rep(x,s,e) for (int x=(s)-((s)>(e));x!=(e)-((s)>(e));((s)<(e)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int) (x).size()

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int n,m,l,q;
struct E{ int to,w,id; };
vector<E> al[2005];

vector<ii> w[2005]; //ok so we store the best 2 guys...
priority_queue<i4,vector<i4>,greater<i4> > pq;

void add(int i,ii val){
	if (w[i][0]==val || w[i][1]==val) return; //prevent from inserting dupes
	
	//cout<<i<<" "<<val.fi<<" "<<val.se<<endl;
	//rep(x,0,2) cout<<w[i][x].fi<<" "<<w[i][x].se<<endl;
	
	if (val.fi<w[i][0].fi){
		if (val.fi!=w[i][0].fi){
			swap(w[i][0],w[i][1]);
			pq.push({w[i][1].fi,w[i][1].se,i,1});
		}
		w[i][0]=val;
		pq.push({w[i][0].fi,w[i][0].se,i,0});
	}
	else if (val.fi<w[i][1].fi && w[i][0].se!=val.se){
		w[i][1]=val;
		pq.push({w[i][1].fi,w[i][1].se,i,1});
	}
	
	assert(w[i][0].se!=w[i][1].se);
}

struct dat{
	vector<i3> res;
	dat(){};
	dat (vector<i3> temp){ //pick best X
		map<int,int> m1,m2;
		set<ii> s;
		sort(all(temp));
		
		for (auto [w,a,b]:temp){
			if (m1[a]==2 || m2[b]==2 || s.count({a,b})) continue;
			m1[a]++,m2[b]++;
			s.insert({a,b});
			res.pub({w,a,b});
			if (sz(res)==4) break;
		}
	}
};

dat merge(dat i,dat j){
	vector<i3> temp;
	for (auto [w,id1,id2]:i.res) for (auto [w2,id3,id4]:j.res){
		if (id2!=id3) temp.pub({w+w2,id1,id4}); 
	}
	return dat(temp);
}

vector<i3> v[2005];
dat trans[2005][2005];
int arr[100005];

signed main(){
	cin.tie(0);
	cout.tie(0);
	cin.sync_with_stdio(false);
	
	cin>>n>>m>>q>>l;
	
	int a,b,c;
	rep(x,0,m){
		cin>>a>>b>>c;
		al[a].pub({b,c,x});
		al[b].pub({a,c,x});
	}
	
	rep(x,1,n+1){
		rep(y,1,n+1) v[y].clear();
		
		for (auto [y,_W,id]:al[x]){
			rep(x,1,n+1){
				w[x].clear();
				rep(y,1,3) w[x].pub({1e18,-y});
			}
			add(y,{_W,id});
			
			while (!pq.empty()){
				int W,id,u,pos;
				tie(W,id,u,pos)=pq.top(),pq.pop();
				if (w[u][pos]!=ii(W,id)) continue;
				
				for (auto [it,w2,id2]:al[u]) if (id!=id2){
					add(it,{W+w2,id2});
				}
			}
			
			rep(y,1,n+1) for (auto [w,id2]:w[y]) if (w<1e18){
				v[y].pub({w,id,id2});
			}
		}
		
		rep(y,1,n+1) trans[x][y]=dat(v[y]);
	}
	
	rep(x,1,l+1) cin>>arr[x];
	
	while (q--){
		cin>>a>>b;
		arr[a]=b;
		
		//rep(x,1,l+1) cout<<arr[x]<<" "; cout<<endl;
		dat ans=trans[arr[1]][arr[2]];
		rep(x,2,l){
			ans=merge(ans,trans[arr[x]][arr[x+1]]);
			//cout<<x<<":"<<endl;
			//for (auto [w,id,id2]:ans.res) cout<<w<<" "<<id<<" "<<id2<<endl;
		}
		if (ans.res.empty()) cout<<"-1"<<endl;
		else cout<<get<0>(ans.res[0])<<endl;
	}
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 94796 KB Output is correct
2 Correct 48 ms 94812 KB Output is correct
3 Correct 48 ms 94784 KB Output is correct
4 Correct 55 ms 94832 KB Output is correct
5 Correct 56 ms 94884 KB Output is correct
6 Correct 49 ms 94800 KB Output is correct
7 Correct 47 ms 94856 KB Output is correct
8 Correct 46 ms 94812 KB Output is correct
9 Correct 45 ms 94776 KB Output is correct
10 Correct 47 ms 94820 KB Output is correct
11 Correct 45 ms 94812 KB Output is correct
12 Correct 47 ms 94852 KB Output is correct
13 Correct 48 ms 94764 KB Output is correct
14 Correct 45 ms 94764 KB Output is correct
15 Correct 45 ms 94812 KB Output is correct
16 Correct 52 ms 94840 KB Output is correct
17 Correct 48 ms 94796 KB Output is correct
18 Correct 46 ms 94844 KB Output is correct
19 Correct 45 ms 94800 KB Output is correct
20 Correct 48 ms 94864 KB Output is correct
21 Correct 45 ms 94796 KB Output is correct
22 Correct 49 ms 94852 KB Output is correct
23 Correct 46 ms 94776 KB Output is correct
24 Correct 45 ms 94756 KB Output is correct
25 Correct 51 ms 94784 KB Output is correct

Subtask #2
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 94796 KB Output is correct
2 Correct 48 ms 94812 KB Output is correct
3 Correct 48 ms 94784 KB Output is correct
4 Correct 55 ms 94832 KB Output is correct
5 Correct 56 ms 94884 KB Output is correct
6 Correct 49 ms 94800 KB Output is correct
7 Correct 47 ms 94856 KB Output is correct
8 Correct 46 ms 94812 KB Output is correct
9 Correct 45 ms 94776 KB Output is correct
10 Correct 47 ms 94820 KB Output is correct
11 Correct 45 ms 94812 KB Output is correct
12 Correct 47 ms 94852 KB Output is correct
13 Correct 48 ms 94764 KB Output is correct
14 Correct 45 ms 94764 KB Output is correct
15 Correct 45 ms 94812 KB Output is correct
16 Correct 52 ms 94840 KB Output is correct
17 Correct 48 ms 94796 KB Output is correct
18 Correct 46 ms 94844 KB Output is correct
19 Correct 45 ms 94800 KB Output is correct
20 Correct 48 ms 94864 KB Output is correct
21 Correct 45 ms 94796 KB Output is correct
22 Correct 49 ms 94852 KB Output is correct
23 Correct 46 ms 94776 KB Output is correct
24 Correct 45 ms 94756 KB Output is correct
25 Correct 51 ms 94784 KB Output is correct
26 Correct 47 ms 94864 KB Output is correct
27 Correct 65 ms 96060 KB Output is correct
28 Correct 62 ms 95996 KB Output is correct
29 Incorrect 211 ms 96868 KB Output isn't correct
30 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 94796 KB Output is correct
2 Correct 48 ms 94812 KB Output is correct
3 Correct 48 ms 94784 KB Output is correct
4 Correct 55 ms 94832 KB Output is correct
5 Correct 56 ms 94884 KB Output is correct
6 Correct 49 ms 94800 KB Output is correct
7 Correct 47 ms 94856 KB Output is correct
8 Correct 46 ms 94812 KB Output is correct
9 Correct 45 ms 94776 KB Output is correct
10 Correct 47 ms 94820 KB Output is correct
11 Correct 45 ms 94812 KB Output is correct
12 Correct 47 ms 94852 KB Output is correct
13 Correct 48 ms 94764 KB Output is correct
14 Correct 45 ms 94764 KB Output is correct
15 Correct 45 ms 94812 KB Output is correct
16 Correct 52 ms 94840 KB Output is correct
17 Correct 48 ms 94796 KB Output is correct
18 Correct 46 ms 94844 KB Output is correct
19 Correct 45 ms 94800 KB Output is correct
20 Correct 48 ms 94864 KB Output is correct
21 Correct 45 ms 94796 KB Output is correct
22 Correct 49 ms 94852 KB Output is correct
23 Correct 46 ms 94776 KB Output is correct
24 Correct 45 ms 94756 KB Output is correct
25 Correct 51 ms 94784 KB Output is correct
26 Correct 47 ms 94864 KB Output is correct
27 Correct 65 ms 96060 KB Output is correct
28 Correct 62 ms 95996 KB Output is correct
29 Incorrect 211 ms 96868 KB Output isn't correct
30 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 94796 KB Output is correct
2 Correct 48 ms 94812 KB Output is correct
3 Correct 48 ms 94784 KB Output is correct
4 Correct 55 ms 94832 KB Output is correct
5 Correct 56 ms 94884 KB Output is correct
6 Correct 49 ms 94800 KB Output is correct
7 Correct 47 ms 94856 KB Output is correct
8 Correct 46 ms 94812 KB Output is correct
9 Correct 45 ms 94776 KB Output is correct
10 Correct 47 ms 94820 KB Output is correct
11 Correct 45 ms 94812 KB Output is correct
12 Correct 47 ms 94852 KB Output is correct
13 Correct 48 ms 94764 KB Output is correct
14 Correct 45 ms 94764 KB Output is correct
15 Correct 45 ms 94812 KB Output is correct
16 Correct 52 ms 94840 KB Output is correct
17 Correct 48 ms 94796 KB Output is correct
18 Correct 46 ms 94844 KB Output is correct
19 Correct 45 ms 94800 KB Output is correct
20 Correct 48 ms 94864 KB Output is correct
21 Correct 45 ms 94796 KB Output is correct
22 Correct 49 ms 94852 KB Output is correct
23 Correct 46 ms 94776 KB Output is correct
24 Correct 45 ms 94756 KB Output is correct
25 Correct 51 ms 94784 KB Output is correct
26 Correct 47 ms 94864 KB Output is correct
27 Correct 65 ms 96060 KB Output is correct
28 Correct 62 ms 95996 KB Output is correct
29 Incorrect 211 ms 96868 KB Output isn't correct
30 Halted 0 ms 0 KB -