oj.uz

Submission #228445

# Submission time Handle Problem Language Result Execution time Memory
228445 2020-05-01T04:25:56 Z caoash Jakarta Skyscrapers (APIO15_skyscraper) C++17
22 / 100
 1000 ms 150136 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);
 
map<pi, vector<pii>> adj; vpl low, high; set<pi> vis; map<pi,ll> dist; map<pi,pii> from;
 
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));
      }
      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)));
       }
   }
 
   fax(i,N){
     trav(curr, low){
      adj[mp(i,curr.s)].pb(mp(0,mp(i,-1)));  
      //dbg(mp(i,curr.s),mp(0,mp(i,-1)));
      if(i-curr.s >= 0){
         adj[mp(i, curr.s)].pb(mp(1,mp(i-curr.s,curr.s)));
         //dbg(mp(i,curr.s),mp(1,mp(i-curr.s,curr.s)));
      }
      if(i + curr.s < N){
         adj[mp(i,curr.s)].pb(mp(1,mp(i+curr.s,curr.s)));
         //dbg(mp(i,curr.s),mp(1,mp(i+curr.s,curr.s)));
      }
     }
   }
   trav(curr, adj){
     dist[curr.f] = INF; 
     trav(to, curr.s){
      dist[to.s] = INF;
     }
   }
   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 5 ms 384 KB Output is correct
2 Correct 5 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 4 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 4 ms 384 KB Output is correct
4 Correct 4 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 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 8 ms 768 KB Output is correct
11 Correct 14 ms 1408 KB Output is correct
12 Correct 52 ms 7928 KB Output is correct
13 Correct 49 ms 8064 KB Output is correct
14 Correct 9 ms 896 KB Output is correct
15 Correct 10 ms 896 KB Output is correct

Subtask #3
0 / 14.0

# 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 4 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 6 ms 384 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 8 ms 768 KB Output is correct
11 Correct 14 ms 1408 KB Output is correct
12 Correct 51 ms 8064 KB Output is correct
13 Correct 48 ms 8064 KB Output is correct
14 Correct 9 ms 896 KB Output is correct
15 Correct 9 ms 896 KB Output is correct
16 Correct 12 ms 1664 KB Output is correct
17 Correct 86 ms 8184 KB Output is correct
18 Correct 48 ms 7544 KB Output is correct
19 Correct 28 ms 4728 KB Output is correct
20 Execution timed out 1106 ms 150136 KB Time limit exceeded
21 Halted 0 ms 0 KB -

Subtask #4
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 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 4 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 8 ms 768 KB Output is correct
11 Correct 15 ms 1536 KB Output is correct
12 Correct 52 ms 7936 KB Output is correct
13 Correct 48 ms 8064 KB Output is correct
14 Correct 9 ms 896 KB Output is correct
15 Correct 9 ms 896 KB Output is correct
16 Correct 12 ms 1664 KB Output is correct
17 Correct 82 ms 8312 KB Output is correct
18 Correct 46 ms 7544 KB Output is correct
19 Correct 28 ms 4736 KB Output is correct
20 Execution timed out 1103 ms 150136 KB Time limit exceeded
21 Halted 0 ms 0 KB -

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 4 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 512 KB Output is correct
10 Correct 8 ms 768 KB Output is correct
11 Correct 14 ms 1408 KB Output is correct
12 Correct 52 ms 7936 KB Output is correct
13 Correct 48 ms 8064 KB Output is correct
14 Correct 9 ms 896 KB Output is correct
15 Correct 10 ms 896 KB Output is correct
16 Correct 13 ms 1664 KB Output is correct
17 Correct 81 ms 8184 KB Output is correct
18 Correct 46 ms 7672 KB Output is correct
19 Correct 28 ms 4608 KB Output is correct
20 Execution timed out 1107 ms 150136 KB Time limit exceeded
21 Halted 0 ms 0 KB -