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Submission #205586

# Submission time Handle Problem Language Result Execution time Memory
205586 2020-02-29T08:46:49 Z kshitij_sodani Jakarta Skyscrapers (APIO15_skyscraper) C++17
0 / 100
 156 ms 262148 KB 
#include <iostream>
#include <bits/stdc++.h>
 
using namespace std;
//typedef int64_t int;
#define mp make_pair
#define pb push_back
#define a first
#define b second
#define endl "\n"
 int dis[2001][30001];
 vector<pair<int,int>> adj[2001][30001];
 int b[30001];
	int p[30001];
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	int n,m;
	cin>>n>>m;
	
	//map<pair<int,int>,int> aa;
	
	for(int i=0;i<m;i++){
		cin>>b[i]>>p[i];
		for(int j=b[i]-p[i];j>=0;j=j-p[i]){
			adj[j+p[i]][i].pb(mp(j,i));
			adj[j+p[i]][i].pb(mp(j,m));
		}
		for(int j=b[i]+p[i];j<n;j=j+p[i]){
			adj[j-p[i]][i].pb(mp(j,i));
			adj[j-p[i]][i].pb(mp(j,m));
		}
		adj[b[i]][m].pb(mp(b[i],i));
	}



	
	memset(dis,-1,sizeof(dis));
	dis[b[0]][m]=0;
	dis[b[0]][0]=0;
	deque<pair<int,int>> aaa;
	aaa.push_back(mp(b[0],0));
	aaa.push_back(mp(b[0],m));
	while(!aaa.empty()){
		pair<int,int> x;


		 x=aaa.front();
		aaa.pop_front();
		int co=1;
		if(x.b==m){
			co=0;
		}
		for(auto nn:adj[x.a][x.b]){
			if(dis[nn.a][nn.b]==-1){
				dis[nn.a][nn.b]=dis[x.a][x.b]+co;
				if(co==0){
					aaa.push_front(nn);
				}
				else{
					aaa.push_back(nn);
				}
			}
		}
	}
	if(b[0]==b[1]){
		cout<<0<<endl;
		return 0;
	}

	cout<<dis[b[1]][m]<<endl;




	return 0;
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 156 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 156 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 155 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Runtime error 151 ms 262144 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Runtime error 155 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -