oj.uz

Submission #228456

# Submission time Handle Problem Language Result Execution time Memory
228456 2020-05-01T05:00:20 Z caoash Jakarta Skyscrapers (APIO15_skyscraper) C++17
57 / 100
 1000 ms 129916 KB 
#pragma GCC target ("sse4")
 
#include <bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
 
using namespace std;
using namespace __gnu_pbds;
 
typedef long long ll;
typedef long double ld;
typedef complex<ld> cd;
 
typedef pair<int, int> pi;
typedef pair<ll,ll> pl;
typedef pair<ld,ld> pd;
typedef pair<int, pi> pii;
 
typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<ll> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
typedef vector<cd> vcd;
 
#define fax(i, a) for (int i = 0; i < (a); i++)
#define f0x(i, a, b) for (int i = (a); i < (b); i++)
#define f0xd(i,a,b) for (int i = (b)-1; i >= (a); i--)
#define faxd(i,a) for (int i = (a)-1; i >= 0; i--)
#define trav(a, x) for (auto& a : x)
#define memeset memset
 
#define mp make_pair
#define pb push_back
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound
 
#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rsz resize
 
template<class T> void ckmin(T &a, T b) { a = min(a, b); }
template<class T> void ckmax(T &a, T b) { a = max(a, b); }
 
template <class T, int ...Ns> struct BIT {
    T val = 0;
    void upd(T v) { val += v; }
    T query() { return val; }
};
 
template <class T, int N, int... Ns> struct BIT<T, N, Ns...> {
    BIT<T,Ns...> bit[N + 1];
    template<typename... Args> void upd(int pos, Args... args) {
        for (; pos <= N; pos += (pos&-pos)) bit[pos].upd(args...);
    }
    template<typename... Args> T sum(int r, Args... args) {
        T res = 0; for (; r; r -= (r&-r)) res += bit[r].query(args...); 
        return res;
    }
    template<typename... Args> T query(int l, int r, Args... args) {
        return sum(r,args...)-sum(l-1,args...);
    }
};
 
namespace input {
    template<class T> void re(complex<T>& x);
    template<class T1, class T2> void re(pair<T1,T2>& p);
    template<class T> void re(vector<T>& a);
    template<class T, size_t SZ> void re(array<T,SZ>& a);
 
    template<class T> void re(T& x) { cin >> x; }
    void re(double& x) { string t; re(t); x = stod(t); }
    void re(ld& x) { string t; re(t); x = stold(t); }
    template<class T, class... Ts> void re(T& t, Ts&... ts) { 
        re(t); re(ts...); 
    }
 
    template<class T> void re(complex<T>& x) { T a,b; re(a,b); x = cd(a,b); }
    template<class T1, class T2> void re(pair<T1,T2>& p) { re(p.f,p.s); }
    template<class T> void re(vector<T>& a) { fax(i,sz(a)) re(a[i]); }
    template<class T, size_t SZ> void re(array<T,SZ>& a) { fax(i,SZ) re(a[i]); }
}
 
using namespace input;
 
namespace output {
    void pr(int x) { cout << x; }
    void pr(long x) { cout << x; }
    void pr(ll x) { cout << x; }
    void pr(unsigned x) { cout << x; }
    void pr(unsigned long x) { cout << x; }
    void pr(unsigned long long x) { cout << x; }
    void pr(float x) { cout << x; }
    void pr(double x) { cout << x; }
    void pr(ld x) { cout << x; }
    void pr(char x) { cout << x; }
    void pr(const char* x) { cout << x; }
    void pr(const string& x) { cout << x; }
    void pr(bool x) { pr(x ? "true" : "false"); }
    
    template<class T1, class T2> void pr(const pair<T1,T2>& x);
    template<class T> void pr(const T& x);
    
    template<class T, class... Ts> void pr(const T& t, const Ts&... ts) { 
        pr(t); pr(ts...); 
    }
    template<class T1, class T2> void pr(const pair<T1,T2>& x) { 
        pr("{",x.f,", ",x.s,"}"); 
    }
    template<class T> void pr(const T& x) { 
        pr("{"); // const iterator needed for vector<bool>
        bool fst = 1; for (const auto& a: x) pr(!fst?", ":"",a), fst = 0; 
        pr("}");
    }
    
    void ps() { pr("\n"); } // print w/ spaces
    template<class T, class... Ts> void ps(const T& t, const Ts&... ts) { 
        pr(t); if (sizeof...(ts)) pr(" "); ps(ts...); 
    }
    
    void pc() { pr("]\n"); } // debug w/ commas
    template<class T, class... Ts> void pc(const T& t, const Ts&... ts) { 
        pr(t); if (sizeof...(ts)) pr(", "); pc(ts...); 
    }
    #define dbg(x...) pr("[",#x,"] = ["), pc(x);
}
 
using namespace output;
 
namespace io {
    void setIn(string s) { freopen(s.c_str(),"r",stdin); }
    void setOut(string s) { freopen(s.c_str(),"w",stdout); }
    void setIO(string s = "") {
        ios_base::sync_with_stdio(0); cin.tie(0); // fast I/O
        if (sz(s)) { setIn(s+".in"), setOut(s+".out"); } // for USACO
    }
}
 
using namespace io;
 
mt19937 rnd(chrono::high_resolution_clock::now().time_since_epoch().count());
 
const int MOD = 1000000007; // 998244353
const ll INF = 1e18;
const int MX = 30005;
const ld PI = 4*atan((ld)1);
 
struct pair_hash
{
	template <class T1, class T2>
	std::size_t operator () (std::pair<T1, T2> const &pair) const
	{
		std::size_t h1 = std::hash<T1>()(pair.first);
		std::size_t h2 = std::hash<T2>()(pair.second);

		return h1 ^ h2;
	}
};

map<pi, vector<pii>> adj; vector<pi> low, high; vector<int> vals; unordered_set<pi, pair_hash> vis; unordered_map<pi,ll, pair_hash> dist;
 
int main() {
   setIO(); 
   int N,M; re(N,M);   
   const int LIM = ceil(sqrt((double)N));
   pi fst = {-1,-1}; pi sec = {-1,-1};
   fax(i,M){
      int b,p; re(b,p);  
      if(fst.f == -1){
         fst = mp(b,p);
      } 
      else if(sec.f == -1){
         sec = mp(b,p);
      }
      if(p <= LIM){
         low.pb(mp(b,p));
         vals.pb(p);
      }
      else{
         high.pb(mp(b,p));
      }
   }
   /*
   ps();
   trav(curr, sorted){
      pr(curr.f, " ", curr.s, "\n");
   }
   */
   trav(curr, low){
      adj[mp(curr.f, -1)].pb(mp(0,mp(curr.f, curr.s)));
      //dbg(mp(curr.f, -1), mp(0,mp(curr.f,curr.s)));
   }
   trav(curr, high){
      for(int j = 1; curr.f + (curr.s*j) < N; j++){
          adj[mp(curr.f,-1)].pb(mp(j,mp(curr.f+(curr.s*j),-1)));
          //dbg(mp(i,curr.s),mp(j,mp(i+(curr.s*j),-1)));
       }
       for(int j = 1; curr.f - (curr.s*j) >= 0; j++){
          adj[mp(curr.f,-1)].pb(mp(j,mp(curr.f-(curr.s*j),-1)));
          //dbg(mp(i,curr.s),mp(j,mp(i-(curr.s*j),-1)));
       }
   }
   sort(vals.begin(), vals.end());
   vals.erase(unique(vals.begin(), vals.end()), vals.end());
   fax(i,N){
     dist[mp(i,-1)] = INF;
     trav(curr, vals){
      adj[mp(i,curr)].pb(mp(0,mp(i,-1)));  
      dist[mp(i,curr)] = INF;
      if(i-curr >= 0){
         adj[mp(i, curr)].pb(mp(1,mp(i-curr,curr)));
      }
      if(i + curr < N){
         adj[mp(i,curr)].pb(mp(1,mp(i+curr,curr)));
      }
     }
   }
   priority_queue<pair<ll,pi>, vector<pair<ll,pi>>, greater<pair<ll,pi>>> pq;
   pq.push(mp(0,mp(fst.f, -1)));
   dist[mp(fst.f, -1)] = 0;
   while(!pq.empty()){
      pair<ll,pi> fr = pq.top(); pq.pop();
      for(pii to : adj[fr.s]){
         if(vis.count(to.s)){
            continue;
         }
         if(dist[to.s] > dist[fr.s] + to.f){
            dist[to.s] = dist[fr.s] + to.f;
            pq.push(mp(dist[to.s], to.s));
         }
      }
      vis.insert(fr.s);
   }
   if(dist.count(mp(sec.f, -1))){
      ll d = dist[mp(sec.f, -1)];
      if(d != INF){
         pr(d, "\n");
         return 0;
      }
   }
   pr(-1, "\n");
}

Compilation message

skyscraper.cpp: In function 'void io::setIn(std::__cxx11::string)':
skyscraper.cpp:133:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     void setIn(string s) { freopen(s.c_str(),"r",stdin); }
                            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
skyscraper.cpp: In function 'void io::setOut(std::__cxx11::string)':
skyscraper.cpp:134:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     void setOut(string s) { freopen(s.c_str(),"w",stdout); }
                             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 6 ms 640 KB Output is correct
11 Correct 7 ms 640 KB Output is correct
12 Correct 6 ms 512 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 6 ms 640 KB Output is correct
15 Correct 6 ms 640 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 304 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 6 ms 640 KB Output is correct
11 Correct 7 ms 640 KB Output is correct
12 Correct 6 ms 512 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 7 ms 640 KB Output is correct
15 Correct 6 ms 640 KB Output is correct
16 Correct 7 ms 1024 KB Output is correct
17 Correct 35 ms 4856 KB Output is correct
18 Correct 35 ms 7084 KB Output is correct
19 Correct 19 ms 4480 KB Output is correct
20 Correct 8 ms 1280 KB Output is correct
21 Correct 7 ms 1024 KB Output is correct
22 Correct 21 ms 4736 KB Output is correct
23 Correct 36 ms 6568 KB Output is correct
24 Correct 79 ms 12296 KB Output is correct
25 Correct 13 ms 2048 KB Output is correct
26 Correct 60 ms 10408 KB Output is correct
27 Correct 33 ms 7080 KB Output is correct
28 Correct 94 ms 13964 KB Output is correct
29 Correct 173 ms 16452 KB Output is correct
30 Correct 30 ms 4984 KB Output is correct
31 Correct 89 ms 8848 KB Output is correct
32 Correct 26 ms 4352 KB Output is correct
33 Correct 441 ms 22500 KB Output is correct
34 Correct 515 ms 22768 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 6 ms 640 KB Output is correct
11 Correct 7 ms 640 KB Output is correct
12 Correct 6 ms 640 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 7 ms 640 KB Output is correct
15 Correct 7 ms 640 KB Output is correct
16 Correct 7 ms 1024 KB Output is correct
17 Correct 30 ms 4864 KB Output is correct
18 Correct 31 ms 7216 KB Output is correct
19 Correct 20 ms 4480 KB Output is correct
20 Correct 9 ms 1280 KB Output is correct
21 Correct 7 ms 1024 KB Output is correct
22 Correct 20 ms 4736 KB Output is correct
23 Correct 35 ms 6568 KB Output is correct
24 Correct 79 ms 12168 KB Output is correct
25 Correct 13 ms 2048 KB Output is correct
26 Correct 60 ms 10408 KB Output is correct
27 Correct 38 ms 7088 KB Output is correct
28 Correct 92 ms 13960 KB Output is correct
29 Correct 171 ms 16392 KB Output is correct
30 Correct 32 ms 4984 KB Output is correct
31 Correct 79 ms 9000 KB Output is correct
32 Correct 27 ms 4352 KB Output is correct
33 Correct 472 ms 22532 KB Output is correct
34 Correct 407 ms 22628 KB Output is correct
35 Correct 187 ms 14096 KB Output is correct
36 Correct 52 ms 7592 KB Output is correct
37 Correct 394 ms 22808 KB Output is correct
38 Correct 367 ms 22032 KB Output is correct
39 Correct 398 ms 22160 KB Output is correct
40 Correct 398 ms 22160 KB Output is correct
41 Correct 382 ms 22124 KB Output is correct
42 Correct 58 ms 11112 KB Output is correct
43 Correct 44 ms 7652 KB Output is correct
44 Correct 14 ms 1980 KB Output is correct
45 Correct 523 ms 27544 KB Output is correct
46 Correct 515 ms 27672 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 6 ms 640 KB Output is correct
11 Correct 7 ms 640 KB Output is correct
12 Correct 5 ms 512 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 6 ms 640 KB Output is correct
15 Correct 6 ms 640 KB Output is correct
16 Correct 7 ms 1024 KB Output is correct
17 Correct 34 ms 4856 KB Output is correct
18 Correct 33 ms 7140 KB Output is correct
19 Correct 23 ms 4480 KB Output is correct
20 Correct 8 ms 1280 KB Output is correct
21 Correct 7 ms 1024 KB Output is correct
22 Correct 20 ms 4736 KB Output is correct
23 Correct 32 ms 6568 KB Output is correct
24 Correct 80 ms 12424 KB Output is correct
25 Correct 12 ms 2048 KB Output is correct
26 Correct 58 ms 10408 KB Output is correct
27 Correct 40 ms 7080 KB Output is correct
28 Correct 100 ms 13960 KB Output is correct
29 Correct 179 ms 16392 KB Output is correct
30 Correct 29 ms 4992 KB Output is correct
31 Correct 77 ms 8872 KB Output is correct
32 Correct 25 ms 4352 KB Output is correct
33 Correct 423 ms 22540 KB Output is correct
34 Correct 426 ms 22536 KB Output is correct
35 Correct 203 ms 14096 KB Output is correct
36 Correct 46 ms 7592 KB Output is correct
37 Correct 402 ms 22680 KB Output is correct
38 Correct 350 ms 22160 KB Output is correct
39 Correct 387 ms 22160 KB Output is correct
40 Correct 331 ms 22160 KB Output is correct
41 Correct 345 ms 22032 KB Output is correct
42 Correct 62 ms 11108 KB Output is correct
43 Correct 42 ms 7668 KB Output is correct
44 Correct 13 ms 1980 KB Output is correct
45 Correct 457 ms 27416 KB Output is correct
46 Correct 452 ms 27800 KB Output is correct
47 Execution timed out 1098 ms 129916 KB Time limit exceeded
48 Halted 0 ms 0 KB -