oj.uz

답안 #584425

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
584425 2022-06-27T11:28:17 Z thezomb1e Pinball (JOI14_pinball) C++17
100 / 100
 768 ms 50376 KB 
//thatsramen

#include <bits/stdc++.h>
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

#define eb emplace_back
#define pb push_back
#define ft first
#define sd second
#define pi pair<int, int>
#define pll pair<ll, ll>
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define dbg(...) dbg_out(__VA_ARGS__)

using ll = long long;
using ld = long double;
using namespace std;
using namespace __gnu_pbds;

//Constants
const ll INF = 5 * 1e18;
const int IINF = 2 * 1e9;
const ll MOD = 1e9 + 7;
// const ll MOD = 998244353;
const ll dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
const ld PI = 3.14159265359;

//Templates
template<typename A, typename B> ostream& operator<<(ostream &os, const pair<A, B> &p) {return os << '(' << p.first << ", " << p.second << ')';}
template<typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type> ostream& operator<<(ostream &os, const T_container &v) {os << '['; string sep; for (const T &x : v) os << sep << x, sep = ", "; return os << ']';}
void dbg_out() {cerr << endl;}
template<typename Head, typename... Tail> void dbg_out(Head H, Tail... T) { cerr << H << ' '; dbg_out(T...); }
template<typename T> void mins(T& x, T y) {x = min(x, y);}
template<typename T> void maxs(T& x, T y) {x = max(x, y);}
template<typename T> using oset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T> using omset = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;

//order_of_key(k): number of elements strictly less than k
//find_by_order(k): k-th element in the set

void setPrec() {cout << fixed << setprecision(15);}
void unsyncIO() {cin.tie(0)->sync_with_stdio(0);}
void setIn(string s) {freopen(s.c_str(), "r", stdin);}
void setOut(string s) {freopen(s.c_str(), "w", stdout);}
void setIO(string s = "") {
    unsyncIO(); setPrec();
    if(s.size()) setIn(s + ".in"), setOut(s + ".out");
}

// #define TEST_CASES

const ll MAX = 2 * 1e18;

struct SegmentTree {
    
    vector<ll> tre;
    int sz;
    
    SegmentTree(int n) {
        sz = 1;
        while (sz < n) sz *= 2;
        tre.assign(2 * sz, MAX);
        // build(a, 1, 0, sz);
    }

    void rcl(int x) {
        tre[x] = min(tre[2 * x], tre[2 * x + 1]);
    }

    void build(vector<int> &a, int x, int lx, int rx) {
        if (rx - lx == 1) {
            if (lx < a.size()) {
                tre[x] = a[lx];
            }
            return;
        }
        int m = (lx + rx) / 2;
        build(a, 2 * x, lx, m);
        build(a, 2 * x + 1, m, rx);
        rcl(x);
    }

    void set(int i, ll v, int x, int lx, int rx) {
        if (rx - lx == 1) {
            mins(tre[x], v);
            return;
        }
        int m = (lx + rx) / 2;
        if (i < m) {
            set(i, v, 2 * x, lx, m);
        } else {
            set(i, v, 2 * x + 1, m, rx);
        }
        rcl(x);
    }

    void set(int i, ll v) {
        set(i, v, 1, 0, sz);
    }

    ll get(int l, int r, int x, int lx, int rx) {
        if (rx <= l || lx >= r) {
            return MAX;
        }
        if (l <= lx && r >= rx) {
            return tre[x];
        }
        int m = (lx + rx) / 2;
        ll s1 = get(l, r, 2 * x, lx, m);
        ll s2 = get(l, r, 2 * x + 1, m, rx);
        return min(s1, s2);
    }

    ll get(int l, int r) {
        return get(l, r, 1, 0, sz);
    }
};

void solve() {
    int m, n;
    cin >> m >> n;
    vector<int> a(m), b(m), c(m), d(m);
    map<int, int> al, comp;
    for (int i = 0; i < m; i++) {
        cin >> a[i] >> b[i] >> c[i] >> d[i];
        al[a[i]]++;
        al[b[i]]++;
        al[c[i]]++;
    }
    int pp = 0;
    for (auto &[x, y] : al) comp[x] = pp++;
    SegmentTree st_left(pp + 5), st_right(pp + 5);
    ll ans = INF;
    for (int i = 0; i < m; i++) {
        ll need_left = st_left.get(comp[a[i]], comp[b[i]] + 1);
        ll need_right = st_right.get(comp[a[i]], comp[b[i]] + 1);
        if (a[i] == 1) need_left = 0;
        if (b[i] == n) need_right = 0;
        st_left.set(comp[c[i]], need_left + d[i]);
        st_right.set(comp[c[i]], need_right + d[i]);
        if (need_left == MAX) continue;
        if (need_right == MAX) continue;
        mins(ans, need_left + need_right + d[i]);
    }
    if (ans == INF) ans = -1;
    cout << ans;
}

int main() {
    setIO();

    int tt = 1;
    #ifdef TEST_CASES
        cin >> tt;
    #endif

    while (tt--)
        solve();

    return 0;
}

Compilation message

pinball.cpp:5: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    5 | #pragma GCC optimization ("O3")
      | 
pinball.cpp:6: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    6 | #pragma GCC optimization ("unroll-loops")
      | 
pinball.cpp: In member function 'void SegmentTree::build(std::vector<int>&, int, int, int)':
pinball.cpp:77:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |             if (lx < a.size()) {
      |                 ~~~^~~~~~~~~~
pinball.cpp: In function 'void setIn(std::string)':
pinball.cpp:48:30: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 | void setIn(string s) {freopen(s.c_str(), "r", stdin);}
      |                       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
pinball.cpp: In function 'void setOut(std::string)':
pinball.cpp:49:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 | void setOut(string s) {freopen(s.c_str(), "w", stdout);}
      |                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 212 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 320 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 320 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 3 ms 468 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 3 ms 724 KB Output is correct
20 Correct 3 ms 468 KB Output is correct
21 Correct 3 ms 468 KB Output is correct
22 Correct 5 ms 724 KB Output is correct
23 Correct 3 ms 724 KB Output is correct
24 Correct 3 ms 712 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 320 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 3 ms 468 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 3 ms 724 KB Output is correct
20 Correct 3 ms 468 KB Output is correct
21 Correct 3 ms 468 KB Output is correct
22 Correct 5 ms 724 KB Output is correct
23 Correct 3 ms 724 KB Output is correct
24 Correct 3 ms 712 KB Output is correct
25 Correct 32 ms 3412 KB Output is correct
26 Correct 113 ms 8880 KB Output is correct
27 Correct 359 ms 17576 KB Output is correct
28 Correct 166 ms 5872 KB Output is correct
29 Correct 240 ms 15584 KB Output is correct
30 Correct 268 ms 8476 KB Output is correct
31 Correct 588 ms 29728 KB Output is correct
32 Correct 535 ms 21140 KB Output is correct
33 Correct 67 ms 8800 KB Output is correct
34 Correct 308 ms 25220 KB Output is correct
35 Correct 368 ms 50284 KB Output is correct
36 Correct 768 ms 50324 KB Output is correct
37 Correct 526 ms 50376 KB Output is correct
38 Correct 484 ms 50316 KB Output is correct