oj.uz

답안 #957977

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
957977 2024-04-04T15:22:58 Z hocln Jakarta Skyscrapers (APIO15_skyscraper) C++17
0 / 100
 1 ms 1144 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
template <class T>
using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define all(v) v.begin(), v.end()
#define logg(x) (31 - __builtin_clz(x))
#define llogg(x) (63 - __builtin_clzll(x))
#define mini(v) min_element(v.begin(), v.end())
#define maxi(v) max_element(v.begin(), v.end())
#define TIME cerr << double(clock() - st) / (double)CLOCKS_PER_SEC
#define sq(a) ((a)*(a))
#ifdef hocln
#include "deb.h"
#else
#define imie(...) ""
#define debug() cerr
#endif
typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
typedef long double ld;
typedef tuple<ll, ll, ll> triple;
typedef tuple<ll, ll, ll, ll, ll> five;
typedef unsigned long long ull;
const long long INF = 4e18;
const int inf = 2e9;
const int MN = 3e5 + 15;
const int MX = 2e6 + 15;
const long long MOD = 1e9 + 7;
//const long long MOD = 998244353;
const long double PI = 3.141592653589793238462643383279502884197;
template<typename T, typename T2> bool chmax(T& a, const T2& b) { return a < b ? a = b, 1 : 0; }
template<typename T, typename T2> bool chmin(T& a, const T2& b) { return a > b ? a = b, 1 : 0; }
template<typename T> using vector2 = vector<vector<T>>;
const int dx[] = { 0, 0, 1, -1, 1, 1, -1, -1 };
const int dy[] = { 1, -1, 0, 0 , 1, -1, 1, -1};
std::random_device rd;
std::mt19937 gen(rd());
ll random(ll low, ll high) { uniform_int_distribution<> dist(low, high); return dist(gen); }
template<typename T1, typename T2> istream& operator>>(istream& is, pair<T1, T2>& p) {
    is >> p.first;
    return is >> p.second;
}
template<typename T> ostream& operator<<(ostream& os, const vector<T>& v) {
    for (auto &i: v) os << i << ' ';
    return os;
}
int tc = 0;
// I hate cp
const int N = 30015;
vector<pii>adj[N];
inline void solve_test() {
	int n, m;
	cin >> n >> m;
	for(int i = 0, a, b;i < m;i++) {
		cin >> a >> b;
		int p = a+b,cnt=1;
		while(p < n) adj[a].emplace_back(p,cnt++),p += b;
		p = a - b;
		cnt=1;
		while(p >= 0) adj[a].emplace_back(p,cnt++),p-=b;
	}
	vector<int>dist(n,inf);
	dist[0]=0;
	priority_queue<pii>q;
	q.push({0,0});
	while(!q.empty()) {
		int cur = q.top().second;
		q.pop();
		for(auto& [b, w] : adj[cur]) {
			if(chmin(dist[b],dist[cur]+w)) q.push({-dist[b],b});
		}
	}
	if(dist[1] == inf) dist[1] = -1;
	cout << dist[1];
}

int main()
{
    //srand(chrono::steady_clock::now().time_since_epoch().count());
    //freopen("convention2.in", "r", stdin);
    //freopen("convention2.out", "w", stdout);
	//cout << "Case #" << tc << ": " << ans << '\n';
	//cout << fixed << setprecision(4);
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    int t = 1;
    //cin >> t;
    while(t--) {
		++tc;
        solve_test();
    }
}

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Incorrect 1 ms 1116 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Incorrect 1 ms 1144 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Incorrect 1 ms 1112 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Incorrect 1 ms 1116 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Incorrect 1 ms 1116 KB Output isn't correct
4 Halted 0 ms 0 KB -