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Submission #969839

# Submission time Handle Problem Language Result Execution time Memory
969839 2024-04-25T16:26:32 Z pcc Jakarta Skyscrapers (APIO15_skyscraper) C++17
22 / 100
 1000 ms 262144 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<short,short>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>

const int inf = 1e9+10;
const int mxn = 3e4+10;
const int mxe = mxn*sqrt(mxn)*2.33;
const int mxv = mxn*sqrt(mxn)*2.1;

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++;
	assert(ecnt<mxe);
	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);
	int tmp = inf;
	while(!dq.empty()){
		int now = dq.front();
		dq.pop_front();
		if(done[now])continue;
		if(now == T)tmp = dist[now];
		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);
				}
			}
		}
	}
	assert(dist[T] == tmp);
	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++;
			assert(vcnt<mxv);
			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 77 ms 137812 KB Output is correct
2 Correct 79 ms 137920 KB Output is correct
3 Correct 80 ms 137880 KB Output is correct
4 Correct 76 ms 137812 KB Output is correct
5 Correct 76 ms 137920 KB Output is correct
6 Correct 77 ms 137812 KB Output is correct
7 Correct 77 ms 137924 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 137768 KB Output is correct
2 Correct 77 ms 137824 KB Output is correct
3 Correct 81 ms 137888 KB Output is correct
4 Correct 78 ms 137812 KB Output is correct
5 Correct 79 ms 138068 KB Output is correct
6 Correct 77 ms 137812 KB Output is correct
7 Correct 77 ms 137920 KB Output is correct
8 Correct 78 ms 137920 KB Output is correct
9 Correct 79 ms 137812 KB Output is correct
10 Correct 78 ms 137808 KB Output is correct
11 Correct 78 ms 138068 KB Output is correct
12 Correct 77 ms 137804 KB Output is correct
13 Correct 78 ms 137836 KB Output is correct
14 Correct 82 ms 138060 KB Output is correct
15 Correct 78 ms 138092 KB Output is correct

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 137808 KB Output is correct
2 Correct 81 ms 137808 KB Output is correct
3 Correct 77 ms 137812 KB Output is correct
4 Correct 77 ms 137820 KB Output is correct
5 Correct 78 ms 137812 KB Output is correct
6 Correct 80 ms 137812 KB Output is correct
7 Correct 77 ms 137836 KB Output is correct
8 Correct 77 ms 138060 KB Output is correct
9 Correct 76 ms 137808 KB Output is correct
10 Correct 79 ms 137808 KB Output is correct
11 Correct 78 ms 138068 KB Output is correct
12 Correct 77 ms 137808 KB Output is correct
13 Correct 83 ms 138324 KB Output is correct
14 Correct 78 ms 138068 KB Output is correct
15 Correct 77 ms 138064 KB Output is correct
16 Correct 77 ms 137960 KB Output is correct
17 Correct 79 ms 140112 KB Output is correct
18 Correct 77 ms 140112 KB Output is correct
19 Correct 79 ms 137812 KB Output is correct
20 Correct 78 ms 137928 KB Output is correct
21 Correct 78 ms 137852 KB Output is correct
22 Correct 78 ms 137940 KB Output is correct
23 Correct 90 ms 140000 KB Output is correct
24 Correct 79 ms 140116 KB Output is correct
25 Correct 92 ms 140112 KB Output is correct
26 Correct 78 ms 140036 KB Output is correct
27 Correct 80 ms 139852 KB Output is correct
28 Execution timed out 2398 ms 262144 KB Time limit exceeded
29 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 137812 KB Output is correct
2 Correct 77 ms 137808 KB Output is correct
3 Correct 76 ms 137920 KB Output is correct
4 Correct 76 ms 137768 KB Output is correct
5 Correct 77 ms 137808 KB Output is correct
6 Correct 77 ms 137808 KB Output is correct
7 Correct 76 ms 137924 KB Output is correct
8 Correct 78 ms 137808 KB Output is correct
9 Correct 79 ms 137844 KB Output is correct
10 Correct 78 ms 137820 KB Output is correct
11 Correct 78 ms 138064 KB Output is correct
12 Correct 77 ms 137812 KB Output is correct
13 Correct 78 ms 137824 KB Output is correct
14 Correct 78 ms 137920 KB Output is correct
15 Correct 96 ms 138052 KB Output is correct
16 Correct 84 ms 138020 KB Output is correct
17 Correct 85 ms 140112 KB Output is correct
18 Correct 78 ms 140112 KB Output is correct
19 Correct 78 ms 137928 KB Output is correct
20 Correct 78 ms 137812 KB Output is correct
21 Correct 77 ms 137900 KB Output is correct
22 Correct 83 ms 137980 KB Output is correct
23 Correct 80 ms 139988 KB Output is correct
24 Correct 86 ms 140116 KB Output is correct
25 Correct 86 ms 140220 KB Output is correct
26 Correct 80 ms 140040 KB Output is correct
27 Correct 84 ms 139960 KB Output is correct
28 Execution timed out 2486 ms 262144 KB Time limit exceeded
29 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 137808 KB Output is correct
2 Correct 95 ms 137916 KB Output is correct
3 Correct 82 ms 137920 KB Output is correct
4 Correct 79 ms 137856 KB Output is correct
5 Correct 79 ms 137920 KB Output is correct
6 Correct 91 ms 137804 KB Output is correct
7 Correct 86 ms 137916 KB Output is correct
8 Correct 82 ms 137928 KB Output is correct
9 Correct 85 ms 137832 KB Output is correct
10 Correct 90 ms 137872 KB Output is correct
11 Correct 81 ms 138068 KB Output is correct
12 Correct 84 ms 137936 KB Output is correct
13 Correct 88 ms 137936 KB Output is correct
14 Correct 85 ms 137924 KB Output is correct
15 Correct 78 ms 138068 KB Output is correct
16 Correct 82 ms 137856 KB Output is correct
17 Correct 96 ms 140212 KB Output is correct
18 Correct 88 ms 140136 KB Output is correct
19 Correct 84 ms 137956 KB Output is correct
20 Correct 81 ms 137892 KB Output is correct
21 Correct 97 ms 137904 KB Output is correct
22 Correct 90 ms 137916 KB Output is correct
23 Correct 82 ms 140108 KB Output is correct
24 Correct 86 ms 140040 KB Output is correct
25 Correct 80 ms 140076 KB Output is correct
26 Correct 82 ms 139856 KB Output is correct
27 Correct 79 ms 139860 KB Output is correct
28 Execution timed out 2364 ms 262144 KB Time limit exceeded
29 Halted 0 ms 0 KB -