oj.uz

Submission #216198

# Submission time Handle Problem Language Result Execution time Memory
216198 2020-03-26T21:34:12 Z rqi Jakarta Skyscrapers (APIO15_skyscraper) C++14
57 / 100
 1000 ms 4728 KB 
#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef long double ld;
typedef double db; 
typedef string str; 

typedef pair<int,int> pi;
typedef pair<ll,ll> pl; 
typedef pair<db,db> pd; 

typedef vector<int> vi; 
typedef vector<ll> vl; 
typedef vector<db> vd; 
typedef vector<str> vs; 
typedef vector<pi> vpi;
typedef vector<pl> vpl; 
typedef vector<pd> vpd; 

#define mp make_pair 
#define f first
#define s second
#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rall(x) (x).rbegin(), (x).rend() 
#define rsz resize
#define ins insert 
#define ft front() 
#define bk back()
#define pf push_front 
#define pb push_back
#define eb emplace_back 
#define lb lower_bound 
#define ub upper_bound 

#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)

const int MOD = 1e9+7; // 998244353;
const int MX = 2e5+5; 
const ll INF = 1e18; 
const ld PI = acos((ld)-1);
const int xd[4] = {1,0,-1,0}, yd[4] = {0,1,0,-1}; 

template<class T> bool ckmin(T& a, const T& b) { 
    return b < a ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { 
    return a < b ? a = b, 1 : 0; } 
int pct(int x) { return __builtin_popcount(x); } 
int bit(int x) { return 31-__builtin_clz(x); } // floor(log2(x)) 
int cdiv(int a, int b) { return a/b+!(a<0||a%b == 0); } // division of a by b rounded up, assumes b > 0 

// INPUT
template<class A> void re(complex<A>& c);
template<class A, class B> void re(pair<A,B>& p);
template<class A> void re(vector<A>& v);
template<class A, size_t SZ> void re(array<A,SZ>& a);

template<class T> void re(T& x) { cin >> x; }
void re(db& d) { str t; re(t); d = stod(t); }
void re(ld& d) { str t; re(t); d = stold(t); }
template<class H, class... T> void re(H& h, T&... t) { re(h); re(t...); }

template<class A> void re(complex<A>& c) { A a,b; re(a,b); c = {a,b}; }
template<class A, class B> void re(pair<A,B>& p) { re(p.f,p.s); }
template<class A> void re(vector<A>& x) { trav(a,x) re(a); }
template<class A, size_t SZ> void re(array<A,SZ>& x) { trav(a,x) re(a); }

// TO_STRING
#define ts to_string
template<class A, class B> str ts(pair<A,B> p);
template<class A> str ts(complex<A> c) { return ts(mp(c.real(),c.imag())); }
str ts(bool b) { return b ? "true" : "false"; }
str ts(char c) { str s = ""; s += c; return s; }
str ts(str s) { return s; }
str ts(const char* s) { return (str)s; }
str ts(vector<bool> v) { 
    bool fst = 1; str res = "{";
    F0R(i,sz(v)) {
        if (!fst) res += ", ";
        fst = 0; res += ts(v[i]);
    }
    res += "}"; return res;
}
template<size_t SZ> str ts(bitset<SZ> b) {
    str res = ""; F0R(i,SZ) res += char('0'+b[i]);
    return res; }
template<class T> str ts(T v) {
    bool fst = 1; str res = "{";
    for (const auto& x: v) {
        if (!fst) res += ", ";
        fst = 0; res += ts(x);
    }
    res += "}"; return res;
}
template<class A, class B> str ts(pair<A,B> p) {
    return "("+ts(p.f)+", "+ts(p.s)+")"; }

// OUTPUT
template<class A> void pr(A x) { cout << ts(x); }
template<class H, class... T> void pr(const H& h, const T&... t) { 
    pr(h); pr(t...); }
void ps() { pr("\n"); } // print w/ spaces
template<class H, class... T> void ps(const H& h, const T&... t) { 
    pr(h); if (sizeof...(t)) pr(" "); ps(t...); }

// DEBUG
void DBG() { cerr << "]" << endl; }
template<class H, class... T> void DBG(H h, T... t) {
    cerr << to_string(h); if (sizeof...(t)) cerr << ", ";
    DBG(t...); }
#ifdef LOCAL // compile with -DLOCAL
#define dbg(...) cerr << "[" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
#else
#define dbg(...) 42
#endif

// FILE I/O
void setIn(string s) { freopen(s.c_str(),"r",stdin); }
void setOut(string s) { freopen(s.c_str(),"w",stdout); }
void unsyncIO() { ios_base::sync_with_stdio(0); cin.tie(0); }
void setIO(string s = "") {
    unsyncIO();
    // cin.exceptions(cin.failbit); 
    // throws exception when do smth illegal
    // ex. try to read letter into int
    if (sz(s)) { setIn(s+".in"), setOut(s+".out"); } // for USACO
}

mt19937 rng((uint32_t)chrono::steady_clock::now().time_since_epoch().count()); 

int B[30005];
int P[30005];
int dist[30005];
set<int> doges[30005];

int main() {
    setIO();
    int N, M;
    cin >> N >> M;
    for(int i = 0; i < M; i++){
        cin >> B[i] >> P[i];
        doges[B[i]].insert(P[i]);
    }
    priority_queue<pi, vector<pi>, greater<pi>> pq; //dist, index
    pq.push(mp(0, B[0]));

    for(int i = 0; i < N; i++){
        dist[i] = MOD;
    }
    int EN = B[1];
    while(sz(pq)){
        pi t = pq.top();
        pq.pop();
        if(dist[t.s] < t.f) continue;
        dist[t.s] = t.f;
        if(t.s == EN){
            ps(t.f);
            return 0;
        }
        for(auto d: doges[t.s]){
            for(int i = t.s+d; i < N; i+=d){
                int dis = t.f+(i-t.s)/d;
                int ind = i;
                if(dist[ind] <= dis) continue;
                dist[ind] = dis;
                pq.push(mp(dis, ind));
            }
            for(int i = t.s-d; i >= 0; i-=d){
                int dis = t.f+(t.s-i)/d;
                int ind = i;
                if(dist[ind] <= dis) continue;
                dist[ind] = dis;
                pq.push(mp(dis, ind));
            }
        }
    }
    ps(-1);
    // you should actually read the stuff at the bottom
}

/* stuff you should look for
    * int overflow, array bounds
    * special cases (n=1?)
    * do smth instead of nothing and stay organized
    * WRITE STUFF DOWN
*/

Compilation message

skyscraper.cpp: In function 'void setIn(std::__cxx11::string)':
skyscraper.cpp:123:31: 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 setOut(std::__cxx11::string)':
skyscraper.cpp:124:32: 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 1792 KB Output is correct
2 Correct 5 ms 1792 KB Output is correct
3 Correct 5 ms 1792 KB Output is correct
4 Correct 5 ms 1792 KB Output is correct
5 Correct 5 ms 1792 KB Output is correct
6 Correct 6 ms 1792 KB Output is correct
7 Correct 6 ms 1792 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1792 KB Output is correct
2 Correct 5 ms 1792 KB Output is correct
3 Correct 5 ms 1792 KB Output is correct
4 Correct 5 ms 1792 KB Output is correct
5 Correct 5 ms 1792 KB Output is correct
6 Correct 5 ms 1792 KB Output is correct
7 Correct 5 ms 1792 KB Output is correct
8 Correct 5 ms 1792 KB Output is correct
9 Correct 6 ms 1840 KB Output is correct
10 Correct 6 ms 1792 KB Output is correct
11 Correct 6 ms 1920 KB Output is correct
12 Correct 6 ms 1792 KB Output is correct
13 Correct 6 ms 1792 KB Output is correct
14 Correct 7 ms 1920 KB Output is correct
15 Correct 6 ms 1920 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1792 KB Output is correct
2 Correct 5 ms 1792 KB Output is correct
3 Correct 5 ms 1792 KB Output is correct
4 Correct 5 ms 1792 KB Output is correct
5 Correct 5 ms 1792 KB Output is correct
6 Correct 5 ms 1792 KB Output is correct
7 Correct 5 ms 1792 KB Output is correct
8 Correct 5 ms 1792 KB Output is correct
9 Correct 6 ms 1792 KB Output is correct
10 Correct 6 ms 1792 KB Output is correct
11 Correct 6 ms 1920 KB Output is correct
12 Correct 6 ms 1792 KB Output is correct
13 Correct 6 ms 1792 KB Output is correct
14 Correct 6 ms 1920 KB Output is correct
15 Correct 6 ms 1920 KB Output is correct
16 Correct 6 ms 1792 KB Output is correct
17 Correct 6 ms 1920 KB Output is correct
18 Correct 5 ms 1792 KB Output is correct
19 Correct 5 ms 1792 KB Output is correct
20 Correct 33 ms 1920 KB Output is correct
21 Correct 6 ms 1920 KB Output is correct
22 Correct 6 ms 1792 KB Output is correct
23 Correct 6 ms 1792 KB Output is correct
24 Correct 7 ms 1920 KB Output is correct
25 Correct 7 ms 1920 KB Output is correct
26 Correct 6 ms 1792 KB Output is correct
27 Correct 6 ms 1792 KB Output is correct
28 Correct 6 ms 1920 KB Output is correct
29 Correct 9 ms 2048 KB Output is correct
30 Correct 6 ms 1920 KB Output is correct
31 Correct 7 ms 1920 KB Output is correct
32 Correct 9 ms 1920 KB Output is correct
33 Correct 11 ms 2300 KB Output is correct
34 Correct 10 ms 2300 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1792 KB Output is correct
2 Correct 5 ms 1792 KB Output is correct
3 Correct 5 ms 1792 KB Output is correct
4 Correct 5 ms 1792 KB Output is correct
5 Correct 5 ms 1792 KB Output is correct
6 Correct 5 ms 1792 KB Output is correct
7 Correct 6 ms 1792 KB Output is correct
8 Correct 5 ms 1792 KB Output is correct
9 Correct 5 ms 1792 KB Output is correct
10 Correct 6 ms 1792 KB Output is correct
11 Correct 6 ms 1920 KB Output is correct
12 Correct 6 ms 1792 KB Output is correct
13 Correct 6 ms 1792 KB Output is correct
14 Correct 7 ms 1920 KB Output is correct
15 Correct 6 ms 1920 KB Output is correct
16 Correct 5 ms 1792 KB Output is correct
17 Correct 6 ms 1920 KB Output is correct
18 Correct 5 ms 1792 KB Output is correct
19 Correct 6 ms 1792 KB Output is correct
20 Correct 33 ms 1920 KB Output is correct
21 Correct 6 ms 1792 KB Output is correct
22 Correct 6 ms 1792 KB Output is correct
23 Correct 6 ms 1792 KB Output is correct
24 Correct 6 ms 1920 KB Output is correct
25 Correct 6 ms 1920 KB Output is correct
26 Correct 6 ms 1792 KB Output is correct
27 Correct 6 ms 1792 KB Output is correct
28 Correct 7 ms 1920 KB Output is correct
29 Correct 8 ms 2048 KB Output is correct
30 Correct 6 ms 1920 KB Output is correct
31 Correct 7 ms 1920 KB Output is correct
32 Correct 7 ms 1920 KB Output is correct
33 Correct 9 ms 2300 KB Output is correct
34 Correct 8 ms 2300 KB Output is correct
35 Correct 22 ms 3200 KB Output is correct
36 Correct 7 ms 2048 KB Output is correct
37 Correct 13 ms 2944 KB Output is correct
38 Correct 16 ms 3456 KB Output is correct
39 Correct 16 ms 3456 KB Output is correct
40 Correct 22 ms 3456 KB Output is correct
41 Correct 17 ms 3456 KB Output is correct
42 Correct 15 ms 2048 KB Output is correct
43 Correct 15 ms 2048 KB Output is correct
44 Correct 37 ms 2200 KB Output is correct
45 Correct 23 ms 3840 KB Output is correct
46 Correct 20 ms 3840 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1792 KB Output is correct
2 Correct 5 ms 1792 KB Output is correct
3 Correct 6 ms 1792 KB Output is correct
4 Correct 5 ms 1792 KB Output is correct
5 Correct 5 ms 1792 KB Output is correct
6 Correct 5 ms 1792 KB Output is correct
7 Correct 5 ms 1792 KB Output is correct
8 Correct 5 ms 1792 KB Output is correct
9 Correct 5 ms 1792 KB Output is correct
10 Correct 6 ms 1792 KB Output is correct
11 Correct 6 ms 1920 KB Output is correct
12 Correct 6 ms 1792 KB Output is correct
13 Correct 6 ms 1792 KB Output is correct
14 Correct 6 ms 1920 KB Output is correct
15 Correct 6 ms 1920 KB Output is correct
16 Correct 6 ms 1792 KB Output is correct
17 Correct 6 ms 1920 KB Output is correct
18 Correct 6 ms 1792 KB Output is correct
19 Correct 6 ms 1792 KB Output is correct
20 Correct 33 ms 1840 KB Output is correct
21 Correct 6 ms 1792 KB Output is correct
22 Correct 6 ms 1792 KB Output is correct
23 Correct 6 ms 1920 KB Output is correct
24 Correct 6 ms 1920 KB Output is correct
25 Correct 6 ms 1920 KB Output is correct
26 Correct 6 ms 1792 KB Output is correct
27 Correct 7 ms 1792 KB Output is correct
28 Correct 6 ms 1920 KB Output is correct
29 Correct 8 ms 2048 KB Output is correct
30 Correct 7 ms 1920 KB Output is correct
31 Correct 7 ms 1920 KB Output is correct
32 Correct 6 ms 1920 KB Output is correct
33 Correct 10 ms 2300 KB Output is correct
34 Correct 8 ms 2300 KB Output is correct
35 Correct 16 ms 3200 KB Output is correct
36 Correct 7 ms 2048 KB Output is correct
37 Correct 13 ms 2944 KB Output is correct
38 Correct 22 ms 3456 KB Output is correct
39 Correct 16 ms 3456 KB Output is correct
40 Correct 16 ms 3456 KB Output is correct
41 Correct 16 ms 3456 KB Output is correct
42 Correct 10 ms 2048 KB Output is correct
43 Correct 10 ms 2048 KB Output is correct
44 Correct 37 ms 2176 KB Output is correct
45 Correct 22 ms 3840 KB Output is correct
46 Correct 21 ms 3968 KB Output is correct
47 Correct 19 ms 3836 KB Output is correct
48 Correct 14 ms 3072 KB Output is correct
49 Correct 12 ms 3072 KB Output is correct
50 Correct 10 ms 2688 KB Output is correct
51 Correct 24 ms 4728 KB Output is correct
52 Correct 24 ms 4220 KB Output is correct
53 Correct 19 ms 3712 KB Output is correct
54 Correct 7 ms 2176 KB Output is correct
55 Correct 8 ms 2176 KB Output is correct
56 Execution timed out 1095 ms 4224 KB Time limit exceeded
57 Halted 0 ms 0 KB -