제출 #443583

#제출 시각아이디문제언어결과실행 시간메모리
443583arwaeystoamnegJakarta Skyscrapers (APIO15_skyscraper)C++17
0 / 100
1 ms1108 KiB
// EXPLOSION! #define _CRT_SECURE_NO_WARNINGS #include<bits/stdc++.h> #include<unordered_set> #include<unordered_map> #include<chrono> using namespace std; typedef pair<int, int> pii; typedef long long ll; typedef pair<ll, ll> pll; typedef long double ld; typedef vector<int> vi; typedef vector<ll> vll; typedef vector<pair<int, int>> vpi; typedef vector<pair<ll, ll>> vpll; #define FOR(i,a,b) for (int i = (a); i < (b); ++i) #define F0R(i,a) FOR(i,0,a) #define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i) #define R0F(i,a) ROF(i,0,a) #define trav(a,x) for (auto& a: x) #define pb push_back #define mp make_pair #define rsz resize #define sz(x) int(x.size()) #define all(x) x.begin(),x.end() #define f first #define s second #define cont continue #define endl '\n' //#define ednl '\n' #define test int testc;cin>>testc;while(testc--) #define pr(a, b) trav(x,a)cerr << x << b; cerr << endl; #define message cout << "Hello World" << endl; const int dx[4] = { 1,0,-1,0 }, dy[4] = { 0,1,0,-1 }; // for every grid problem!! const ll linf = 4000000000000000000LL; const ll inf = 998244353;// 1000000007 void pv(vi a) { trav(x, a)cout << x << " "; cout << endl; }void pv(vll a) { trav(x, a)cout << x << " "; cout << endl; }void pv(vector<vi>a) { F0R(i, sz(a)) { cout << i << endl; pv(a[i]); cout << endl; } }void pv(vector<vll>a) { F0R(i, sz(a)) { cout << i << endl; pv(a[i]); }cout << endl; }void pv(vector<string>a) { trav(x, a)cout << x << endl; cout << endl; } void setIO(string s) { ios_base::sync_with_stdio(0); cin.tie(0); #ifdef arwaeystoamneg if (sz(s)) { freopen((s + ".in").c_str(), "r", stdin); if (s != "test1") freopen((s + ".out").c_str(), "w", stdout); } #endif } const int MAX = 33333, k = 200; int n, m; pii a[MAX]; int dist[MAX][k]; vi b[MAX]; int main() { setIO("test1"); cin >> m >> n; F0R(i, n)cin >> a[i].f >> a[i].s; F0R(i, n)b[a[i].f].pb(a[i].s); F0R(i, m)fill(dist[i], dist[i] + k, inf); dist[0][0] = 0; // dist, position, len. len = 0 means too big priority_queue<pair<int, pii>, vector<pair<int, pii>>, greater<pair<int, pii>>>todo; todo.push({ 0,{0,0} }); while (sz(todo)) { pair<int, pii> t = todo.top(); todo.pop(); int i = t.s.f, j = t.s.s; if (dist[i][j] != t.f)continue; if (j == 0) { trav(x, b[i]) { if (x >= k) { int c = 0; for (int j = i; j >= 0; j -= x, c++) { if (dist[j][0] > dist[i][0] + c) { dist[j][0] = dist[i][0] + c; todo.push({ dist[j][0], {j,0} }); } } c = 1; for (int j = i + x; j < m; j += x, c++) { if (dist[j][0] > dist[i][0] + c) { dist[j][0] = dist[i][0] + c; todo.push({ dist[j][0], {j,0} }); } } } else { dist[i][x] = dist[i][0]; todo.push({ dist[i][x],{i,x} }); } } } else { if (i - j >= 0 && dist[i - j][j] > dist[i][j] + 1) { dist[i - j][j] = dist[i][j] + 1; todo.push({ dist[i - j][j], {i - j, j} }); if (dist[i - j][0] > dist[i - j][j]) { dist[i - j][0] = dist[i - j][j]; todo.push({ dist[i - j][0],{i - j, 0} }); } } if (i + j < m && dist[i + j][j] > dist[i][j] + 1) { dist[i + j][j] = dist[i][j] + 1; todo.push({ dist[i + j][j], {i + j, j} }); if (dist[i + j][0] > dist[i + j][j]) { dist[i + j][0] = dist[i + j][j]; todo.push({ dist[i + j][0],{i + j, 0} }); } } } } cout << dist[1][0] << endl; }
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