Submission #1183760

#TimeUsernameProblemLanguageResultExecution timeMemory
1183760swishy123Jakarta Skyscrapers (APIO15_skyscraper)C++20
0 / 100
1 ms328 KiB
#include <iostream> #include <algorithm> #include <vector> #include <random> #include <chrono> #include <set> #include <map> #include <stack> #include <functional> #include <iomanip> #include <queue> #include <cassert> #include <complex> #include <cstring> #include <memory> #include <bitset> #include <sstream> #include <cmath> #include <numeric> #include <numbers> #include <fstream> using namespace std; #ifndef template #ifndef define #define ll long long #define ld long double #define pl pair<ll, ll> #define pi pair<int, int> #define nl cout << '\n'; #define x first #define y second #define cbit(x) __builtin_popcountll(x) #define uid(a, b) uniform_int_distribution<ll>(a, b)(rng) #define siz(x) (int)x.size() #endif #ifndef print void print(size_t x) {cout << x << ' ';} void print(int x) {cout << x << ' ';} void print(long long x) {cout << x << ' ';} void print(float x) {cout << x << ' ';} void print(long double x) {cout << x << ' ';} void print(char x) {cout << x << ' ';} void print(const char* x) {cout << x << ' ';} void print(bool x) {cout << x << ' ';} void print(string &x) {cout << x << ' ';} template<typename T, typename V> void print(pair<T, V> &p) {print(p.x); print(p.y);} template<typename T> void print(vector<T> v) {for (int i = 0; i < v.size(); i++) print(v[i]);} template<typename T> void print(vector<vector<T>> v) { for (int i = 0; i < v.size(); i++){ for (int j = 0; j < v[i].size(); j++) print(v[i][j]); nl; } } template <typename T, typename... V> void print(T t, V&&... v) {print(t); print(v...);} #endif #ifndef read void read(int &x) {cin >> x;} void read(long long &x) {cin >> x;} void read(unsigned &x) {cin >> x;} void read(unsigned long long &x) {cin >> x;} void read(float &x) {cin >> x;} void read(long double &x) {cin >> x;} void read(char &x) {cin >> x;} void read(string &x) {cin >> x;} void read(bool &x) {cin >> x;} template<typename T> void read(vector<T> &v) { for (int i = 0; i < v.size(); i++) read(v[i]); } template <typename T, typename... V> void read(T &t, V&... v) {read(t); read(v...);} #endif mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); template<class T> bool maxi(T& a, const T& b) { return a < b ? a = b, 1 : 0; } template<class T> bool mini(T& a, const T& b) { return a > b ? a = b, 1 : 0; } template<class... Args> auto vec(size_t n, Args&&... args) { if constexpr(sizeof...(args) == 1) return vector(n, args...); else return vector(n, vec(args...)); } #endif using namespace std; const int inf = 1e9; const ll def = 1e7+1; const ll mod = 998244353; void solve(){ int n, m; read(n, m); auto dp = vec(n, inf); vector<vector<int>> doge(n); for (int i = 0; i < m; i++){ int u, x; read(u, x); doge[u].push_back(x); } priority_queue<pi, vector<pi>, greater<pi>> pq; dp[0] = 0; pq.push({0, 0}); while (pq.size()){ auto [dis, u] = pq.top(); pq.pop(); if (dis > dp[u]) continue; for (int x : doge[u]){ for (int v = u % x; v < n; v += x){ int ndis = dis + abs(v - u) / x; if (ndis < dp[v]){ pq.push({ndis, v}); dp[v] = ndis; } } } } int res = dp[1]; if (res == inf) res = -1; print(res); } /* */ int32_t main(){ ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); // if (ifstream("input.txt").good()){ // freopen("input.txt", "r", stdin); // freopen("output.txt", "w", stdout); // } int t; t = 1; while (t--){ solve(); nl; } }
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