Submission #60464

#	Time	Username	Problem	Language	Result	Execution time	Memory
60464		istlemin	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	10 / 100	4 ms	1008 KiB

skyscraper

#include<bits/stdc++.h>

using namespace std;

#define rep(i,a,b) for(int i = a; i<int(b);++i)
#define all(v) v.begin(),v.end()
#define sz(v) v.size()
#define trav(a,c) for(auto a: c)

typedef long long ll;
typedef vector<ll> vi;
typedef pair<ll,ll> pii;

int main(){
	cin.sync_with_stdio(false);
    ll n,m;
    cin>>n>>m;

    vi b(m);
    vi p(m);

    rep(i,0,m) cin>>b[i]>>p[i];

    queue<tuple<ll,ll> > q; //(doge,jumps);
    q.emplace(0,0);

    vector<bool> seen(m);

    while(q.size()){
        ll doge,jumps;
        tie(doge,jumps) = q.front();
        q.pop();

		if(seen[doge]) continue;
		seen[doge] = true;

        if(doge==1){
            cout<<jumps<<endl;
            return 0;
        }

        rep(i,0,m){
            if((b[i]-b[doge])%p[doge]==0)
				q.emplace(i,jumps+abs(b[i]-b[doge])/p[doge]);
        }
    }

    cout<<-1<<endl;
}

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