Submission #700721

#	Time	Username	Problem	Language	Result	Execution time	Memory
700721		Sanzhar23	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	36 / 100	81 ms	32588 KiB

skyscraper

#include <bits/stdc++.h>

using namespace std;

#define ll long long	
#define pb push_back
#define bug cout << "bug" << endl
#define speed ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define all(x) x.begin(), x.end()
#define F first
#define S second
#define pll pair <ll, ll> 
#define pii pair <int, int> 
#define triple pair <pair <ll, ll> , ll>   
#define ull unsigned long long
#define ld long double
#define pinode pair <node*, node*>

const ll INF = 9e18 + 5;
const ll inf = 1e9 + 5;
const ll N = 2e3	 + 5;
const ll shift = 2e6;
const ll mod = 998244353;
const ll mod2 = 1e9 + 9;
const ll M = 1e3 + 5;
const ll LOG = 21;
const ll sp = 263;
const ll sp2 = 9973;
const int block = 100;
const double eps = 1e-10;

ll n, m, b[N], p[N], d[N];
vector <pii> g[N];

int main(){
	speed;
	cin >> n >> m;
	for(int i = 0; i < m; i++){
		cin >> b[i] >> p[i];
	}
	for(int i = 0; i < m; i++){
		if(i == 1)
			continue;
		for(int j = 0; j < m; j++){
			if(abs(b[i] - b[j]) % p[i] == 0){
				g[i].pb({j, abs(b[i] - b[j]) / p[i]});
			}
		}
	}
	for(int i = 0; i < m; i++){
		d[i] = INF;
	}
	set <pii> st;
	st.insert({0, 0});
	d[0] = 0;
	while(st.size()){
		ll v = st.begin() -> second, len = st.begin() -> first;
		st.erase(st.begin());
		for(auto to : g[v]){
			if(d[v] + to.S < d[to.F]){
				st.erase({d[to.F], to.F});
				d[to.F] = d[v] + to.S;
				st.insert({d[to.F], to.F});
			}
		}
	}
	if(d[1] == INF)
		d[1] = -1;
	cout << d[1] << endl;	
}
/*	
%I64d6


6 1 3
8 1 2 1 5 4		
		



%I64d
*/ 

Compilation message (stderr)

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:57:32: warning: unused variable 'len' [-Wunused-variable]
   57 |   ll v = st.begin() -> second, len = st.begin() -> first;
      |                                ^~~

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