oj.uz

답안 #229199

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
229199 2020-05-03T16:22:29 Z rqi Pinball (JOI14_pinball) C++14
29 / 100
 1000 ms 284024 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()); 
 
/**
 * Description: 1D point update, range query where \texttt{comb} is
     * any associative operation. If $N$ is not power of 2 then 
     * operations work but \texttt{seg[1] != query(0,N-1)}.
 * Time: O(\log N)
 * Source: 
    * http://codeforces.com/blog/entry/18051
    * KACTL
 * Verification: SPOJ Fenwick
 */

template<class T> struct Seg { // comb(ID,b) = b
    const T ID = INF; T comb(T a, T b) { return min(a, b); } 
    int n; vector<T> seg;
    void init(int _n) { n = _n; seg.assign(2*n,ID); }
    void pull(int p) { seg[p] = comb(seg[2*p],seg[2*p+1]); }
    void upd(int p, T val) { // min val at position p
        ckmin(seg[p+=n], val);
        for (p /= 2; p; p /= 2) pull(p); }
    T query(int l, int r) {    // sum on interval [l, r]
        T ra = ID, rb = ID; 
        for (l += n, r += n+1; l < r; l /= 2, r /= 2) {
            if (l&1) ra = comb(ra,seg[l++]);
            if (r&1) rb = comb(seg[--r],rb);
        }
        return comb(ra,rb);
    }
};



const int mx = 3007;
int A[mx];
int B[mx];
int C[mx];
ll D[mx];
map<int, int> m;

Seg<ll> fL[mx]; // fixed L value
Seg<ll> fR[mx]; // fixed R value


int main() {
    setIO();
    for(int i = 0; i < mx; i++){
        fL[i].init(mx);
        fR[i].init(mx);
    }
    int M, N;
    cin >> M >> N;
    for(int i = 1; i <= M; i++){
        cin >> A[i] >> B[i] >> C[i] >> D[i];
        m[A[i]];
        m[B[i]];
        if(B[i]+1 <= N) m[B[i]+1];
        //dbg(i, A[i], B[i], C[i]);
    }
    m[1];
    m[N];
    int cnt = 0;
    for(auto &u: m){
        cnt++;
        u.s = cnt;
    }
    //dbg(m);
    for(int i = 1; i <= M; i++){
        A[i] = m[A[i]];
        B[i] = m[B[i]];
        C[i] = (prev(m.ub(C[i])))->s;
        //dbg(i, A[i], B[i], C[i]);
    }
    N = m[N];
    ////////////////////////
    ll ans = INF;
    fL[1].upd(N, 0);
    fR[N].upd(1, 0);
    for(int i = 1; i <= M; i++){
        for(int j = A[i]; j <= B[i]; j++){
            ckmin(ans, fL[j].query(j, B[i])+D[i]);
        }
        vector<pair<pi, ll>> upds;
        for(int j = C[i]; j <= N; j++){
            //update to (C[i], j)
            upds.pb(mp(mp(C[i], j), fR[j].query(A[i], j)+D[i]));
        }
        for(int j = 1; j <= C[i]; j++){
            //update to (j, C[i])
            upds.pb(mp(mp(j, C[i]), fL[j].query(j, B[i])+D[i]));
        }
        //dbg(i);
        for(auto u: upds){
            //dbg(u.f.f, u.f.s, u.s);
            fL[u.f.f].upd(u.f.s, u.s);
            fR[u.f.s].upd(u.f.f, u.s);
        }
    }

    if(ans == INF) ps(-1);
    else ps(ans);
    // 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

pinball.cpp: In function 'void setIn(std::__cxx11::string)':
pinball.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); }
                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
pinball.cpp: In function 'void setOut(std::__cxx11::string)':
pinball.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
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 136 ms 283768 KB Output is correct
2 Correct 136 ms 283896 KB Output is correct
3 Correct 136 ms 283768 KB Output is correct
4 Correct 139 ms 283896 KB Output is correct
5 Correct 137 ms 283744 KB Output is correct
6 Correct 136 ms 283836 KB Output is correct
7 Correct 137 ms 283768 KB Output is correct
8 Correct 136 ms 283768 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 136 ms 283768 KB Output is correct
2 Correct 136 ms 283896 KB Output is correct
3 Correct 136 ms 283768 KB Output is correct
4 Correct 139 ms 283896 KB Output is correct
5 Correct 137 ms 283744 KB Output is correct
6 Correct 136 ms 283836 KB Output is correct
7 Correct 137 ms 283768 KB Output is correct
8 Correct 136 ms 283768 KB Output is correct
9 Correct 139 ms 283832 KB Output is correct
10 Correct 148 ms 283768 KB Output is correct
11 Correct 151 ms 283912 KB Output is correct
12 Correct 169 ms 283896 KB Output is correct
13 Correct 167 ms 284024 KB Output is correct
14 Correct 163 ms 283896 KB Output is correct

Subtask #3
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 136 ms 283768 KB Output is correct
2 Correct 136 ms 283896 KB Output is correct
3 Correct 136 ms 283768 KB Output is correct
4 Correct 139 ms 283896 KB Output is correct
5 Correct 137 ms 283744 KB Output is correct
6 Correct 136 ms 283836 KB Output is correct
7 Correct 137 ms 283768 KB Output is correct
8 Correct 136 ms 283768 KB Output is correct
9 Correct 139 ms 283832 KB Output is correct
10 Correct 148 ms 283768 KB Output is correct
11 Correct 151 ms 283912 KB Output is correct
12 Correct 169 ms 283896 KB Output is correct
13 Correct 167 ms 284024 KB Output is correct
14 Correct 163 ms 283896 KB Output is correct
15 Correct 138 ms 283768 KB Output is correct
16 Correct 194 ms 283896 KB Output is correct
17 Correct 724 ms 284024 KB Output is correct
18 Correct 143 ms 283896 KB Output is correct
19 Execution timed out 1106 ms 284024 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 136 ms 283768 KB Output is correct
2 Correct 136 ms 283896 KB Output is correct
3 Correct 136 ms 283768 KB Output is correct
4 Correct 139 ms 283896 KB Output is correct
5 Correct 137 ms 283744 KB Output is correct
6 Correct 136 ms 283836 KB Output is correct
7 Correct 137 ms 283768 KB Output is correct
8 Correct 136 ms 283768 KB Output is correct
9 Correct 139 ms 283832 KB Output is correct
10 Correct 148 ms 283768 KB Output is correct
11 Correct 151 ms 283912 KB Output is correct
12 Correct 169 ms 283896 KB Output is correct
13 Correct 167 ms 284024 KB Output is correct
14 Correct 163 ms 283896 KB Output is correct
15 Correct 138 ms 283768 KB Output is correct
16 Correct 194 ms 283896 KB Output is correct
17 Correct 724 ms 284024 KB Output is correct
18 Correct 143 ms 283896 KB Output is correct
19 Execution timed out 1106 ms 284024 KB Time limit exceeded
20 Halted 0 ms 0 KB -