Submission #972093

#	Time	Username	Problem	Language	Result	Execution time	Memory
972093		batsukh2006	Jakarta Skyscrapers (APIO15_skyscraper)	C++17	10 / 100	19 ms	756 KiB

skyscraper

#include<iostream>
#include<stdio.h>
#include<math.h>
#include<map>
#include<string>
#include<algorithm>
#include<vector>
#include<string.h>
#include<utility>
#include<set>
#include<cmath>
#include<queue>
#include<deque>
#include<functional>
#include<stack>
#include<limits.h>
#include<iomanip>
#include<unordered_map> 
#include<numeric>
#include<tuple>
#include<bitset>
using namespace std;
#define MOD 1000000007
//#define int long long
#define ss second
#define ff first
#define endl '\n'
signed main(){
    // freopen("file.in", "r", stdin);
    // freopen("file.out", "w", stdout);
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    int n,m; cin>>n>>m;
    vector<int> b(m+1),p(m+1);
    for(int i=1; i<=m; i++) cin>>b[i]>>p[i];
    int cnt=n-1;
    stack<int> q;
    q.push(2);
    vector<bool> vis(m+1);
    vector<int> dp(m+1,1e9);
    dp[2]=0;
    vis[2]=1;
    while(cnt>0&&!q.empty()){
    	int need=q.size();
    	while(need--){
    		int c=q.top();
    		q.pop();
    		cnt--;
    		for(int i=1; i<=m; i++){
    			if(abs(b[i]-b[c])%p[i]==0){
    				dp[i]=min(dp[i],abs(b[i]-b[c])/p[i]+dp[c]);
    			}
    		}
    	}
    	for(int i=1; i<=m; i++){
    		if(!vis[i]&&dp[i]!=1e9){
    			vis[i]=1;
				q.push(i);
			}
    	}
    }
    int ans=1e9;
    for(int i=2; i<=m; i++){
    	if(abs(b[1]-b[i])%p[1]==0){
			ans=min(ans,abs(b[1]-b[i])/p[1]+dp[i]);
		}
	}
    if(ans==1e9) cout<<-1;
    else cout<<ans;
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 12
• Subtask 3: 0 / 14
• Subtask 4: 0 / 21
• Subtask 5: 0 / 43