oj.uz

Submission #969816

# Submission time Handle Problem Language Result Execution time Memory
969816 2024-04-25T15:56:52 Z pcc Jakarta Skyscrapers (APIO15_skyscraper) C++17
22 / 100
 151 ms 197504 KB 
#include <bits/stdc++.h>
using namespace std;

#pragma GCC target("avx2,popcnt,sse4")
#pragma GCC optimize("O3,unroll-loops")
#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>


const int inf = 1e9;
const int mxn = 3e4+10;
const int mxe = mxn*sqrt(mxn)*3;
const int mxv = mxe;

map<pii,vector<int>> mp;
int N,M;
int ecnt,vcnt;
int to[mxe],nid[mxe];
bitset<mxv> wei;
int head[mxv];
int dist[mxv];
int S,T;
int ts;

void add_edge(int a,int b,int w){
	ecnt++;
	nid[ecnt] = head[a];
	to[ecnt] = b;
	wei[ecnt] = w;
	head[a] = ecnt;
}

bitset<mxv> done;
deque<int> dq;

void BFS(){
	dq.resize(mxv*2);
	fill(dist,dist+mxv,inf);
	dist[S] = 0;
	dq.push_back(S);
	while(!dq.empty()){
		int now = dq.front();
		dq.pop_front();
		if(done[now])continue;
		if(now == T)break;
		done[now] = true;
		for(int eid = head[now];eid;eid = nid[eid]){
			int nxt = to[eid],w = wei[eid];
			//cout<<now<<' '<<nxt<<":"<<dist[now]+w<<' '<<dist[nxt]<<endl;
			if(!w){
				if(dist[nxt]>dist[now]){
					dist[nxt] = dist[now];
					dq.push_front(nxt);
				}
			}
			else{
				if(dist[nxt]>dist[now]+w){
					dist[nxt] = dist[now]+w;
					dq.push_back(nxt);
				}
			}
		}
	}
	return;
}


int main(){
	ts = clock();
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>N>>M;
	for(int i = 0;i<M;i++){
		pii tmp;
		cin>>tmp.fs>>tmp.sc;
		mp[pii(tmp.sc,tmp.fs%tmp.sc)].push_back(tmp.fs);
		if(!i)S = tmp.fs;
		if(i == 1)T = tmp.fs;
	}
	vcnt = N-1;
	for(auto &i:mp){
		sort(i.sc.rbegin(),i.sc.rend());
		for(int j = i.fs.sc;j<N;j+=i.fs.fs){
			vcnt++;
			add_edge(vcnt,j,0);
			while(!i.sc.empty()&&i.sc.back() == j){
				add_edge(i.sc.back(),vcnt,0);
				i.sc.pop_back();
			}
			if(j != i.fs.sc){
				add_edge(vcnt-1,vcnt,1);
				add_edge(vcnt,vcnt-1,1);
			}
		}
	}
	BFS();
	cout<<(dist[T]>=inf?-1:dist[T])<<'\n';
	return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 196948 KB Output is correct
2 Correct 76 ms 196944 KB Output is correct
3 Correct 81 ms 197028 KB Output is correct
4 Correct 119 ms 197200 KB Output is correct
5 Correct 117 ms 196948 KB Output is correct
6 Correct 120 ms 197200 KB Output is correct
7 Correct 118 ms 197252 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 123 ms 196948 KB Output is correct
2 Correct 78 ms 197108 KB Output is correct
3 Correct 82 ms 196952 KB Output is correct
4 Correct 116 ms 196944 KB Output is correct
5 Correct 114 ms 196948 KB Output is correct
6 Correct 151 ms 197196 KB Output is correct
7 Correct 115 ms 196968 KB Output is correct
8 Correct 114 ms 196944 KB Output is correct
9 Correct 118 ms 197196 KB Output is correct
10 Correct 114 ms 197204 KB Output is correct
11 Correct 116 ms 197200 KB Output is correct
12 Correct 125 ms 197164 KB Output is correct
13 Correct 116 ms 197192 KB Output is correct
14 Correct 119 ms 197284 KB Output is correct
15 Correct 118 ms 197200 KB Output is correct

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 118 ms 197200 KB Output is correct
2 Correct 76 ms 196944 KB Output is correct
3 Correct 76 ms 196944 KB Output is correct
4 Correct 115 ms 196944 KB Output is correct
5 Correct 116 ms 197200 KB Output is correct
6 Correct 116 ms 196948 KB Output is correct
7 Correct 126 ms 197192 KB Output is correct
8 Correct 116 ms 197204 KB Output is correct
9 Correct 122 ms 196992 KB Output is correct
10 Correct 116 ms 197036 KB Output is correct
11 Correct 118 ms 197200 KB Output is correct
12 Correct 116 ms 197032 KB Output is correct
13 Correct 117 ms 197360 KB Output is correct
14 Correct 116 ms 197312 KB Output is correct
15 Correct 118 ms 197204 KB Output is correct
16 Correct 114 ms 197200 KB Output is correct
17 Correct 122 ms 197480 KB Output is correct
18 Correct 136 ms 197200 KB Output is correct
19 Correct 118 ms 197204 KB Output is correct
20 Correct 115 ms 197192 KB Output is correct
21 Correct 118 ms 197204 KB Output is correct
22 Correct 114 ms 197056 KB Output is correct
23 Correct 116 ms 197164 KB Output is correct
24 Correct 115 ms 197464 KB Output is correct
25 Correct 128 ms 197356 KB Output is correct
26 Correct 117 ms 197200 KB Output is correct
27 Correct 117 ms 197228 KB Output is correct
28 Incorrect 76 ms 197468 KB Output isn't correct
29 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 115 ms 196944 KB Output is correct
2 Correct 79 ms 196948 KB Output is correct
3 Correct 82 ms 197140 KB Output is correct
4 Correct 116 ms 196944 KB Output is correct
5 Correct 115 ms 197192 KB Output is correct
6 Correct 116 ms 196944 KB Output is correct
7 Correct 127 ms 197144 KB Output is correct
8 Correct 117 ms 196984 KB Output is correct
9 Correct 116 ms 197200 KB Output is correct
10 Correct 116 ms 197200 KB Output is correct
11 Correct 115 ms 197156 KB Output is correct
12 Correct 127 ms 197124 KB Output is correct
13 Correct 115 ms 196968 KB Output is correct
14 Correct 117 ms 197204 KB Output is correct
15 Correct 115 ms 197392 KB Output is correct
16 Correct 125 ms 197180 KB Output is correct
17 Correct 114 ms 197204 KB Output is correct
18 Correct 117 ms 197200 KB Output is correct
19 Correct 114 ms 197208 KB Output is correct
20 Correct 119 ms 197172 KB Output is correct
21 Correct 117 ms 197204 KB Output is correct
22 Correct 118 ms 197204 KB Output is correct
23 Correct 122 ms 197336 KB Output is correct
24 Correct 121 ms 197504 KB Output is correct
25 Correct 115 ms 197204 KB Output is correct
26 Correct 116 ms 197200 KB Output is correct
27 Correct 114 ms 197264 KB Output is correct
28 Incorrect 79 ms 197500 KB Output isn't correct
29 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 114 ms 196944 KB Output is correct
2 Correct 78 ms 197028 KB Output is correct
3 Correct 73 ms 197200 KB Output is correct
4 Correct 115 ms 196948 KB Output is correct
5 Correct 123 ms 197144 KB Output is correct
6 Correct 118 ms 197200 KB Output is correct
7 Correct 115 ms 196944 KB Output is correct
8 Correct 119 ms 196948 KB Output is correct
9 Correct 116 ms 197156 KB Output is correct
10 Correct 124 ms 197200 KB Output is correct
11 Correct 114 ms 197200 KB Output is correct
12 Correct 116 ms 197200 KB Output is correct
13 Correct 114 ms 197148 KB Output is correct
14 Correct 123 ms 197204 KB Output is correct
15 Correct 115 ms 197256 KB Output is correct
16 Correct 116 ms 197448 KB Output is correct
17 Correct 118 ms 197200 KB Output is correct
18 Correct 115 ms 197204 KB Output is correct
19 Correct 114 ms 197288 KB Output is correct
20 Correct 125 ms 197004 KB Output is correct
21 Correct 116 ms 197212 KB Output is correct
22 Correct 116 ms 197308 KB Output is correct
23 Correct 125 ms 197224 KB Output is correct
24 Correct 115 ms 197456 KB Output is correct
25 Correct 115 ms 197208 KB Output is correct
26 Correct 117 ms 197204 KB Output is correct
27 Correct 117 ms 197200 KB Output is correct
28 Incorrect 76 ms 197456 KB Output isn't correct
29 Halted 0 ms 0 KB -