oj.uz

Submission #874567

# Submission time Handle Problem Language Result Execution time Memory
874567 2023-11-17T09:52:11 Z efedmrlr Cat Exercise (JOI23_ho_t4) C++17
41 / 100
 514 ms 32400 KB 
#include <bits/stdc++.h>

using namespace std;

#define n_l '\n'
#define dbg(...) cout << "[" << #__VA_ARGS__ << "]: "; cout << to_string(__VA_ARGS__) << endl
template <typename T, size_t N> int SIZE(const T (&t)[N]){ return N; } template<typename T> int SIZE(const T &t){ return t.size(); } string to_string(const string s, int x1=0, int x2=1e9){ return '"' + ((x1 < s.size()) ? s.substr(x1, x2-x1+1) : "") + '"'; } string to_string(const char* s) { return to_string((string) s); } string to_string(const bool b) { return (b ? "true" : "false"); } string to_string(const char c){ return string({c}); } template<size_t N> string to_string(const bitset<N> &b, int x1=0, int x2=1e9){ string t = ""; for(int __iii__ = min(x1,SIZE(b)),  __jjj__ = min(x2, SIZE(b)-1); __iii__ <= __jjj__; ++__iii__){ t += b[__iii__] + '0'; } return '"' + t + '"'; } template <typename A, typename... C> string to_string(const A (&v), int x1=0, int x2=1e9, C... coords); int l_v_l_v_l = 0, t_a_b_s = 0; template <typename A, typename B> string to_string(const pair<A, B> &p) { l_v_l_v_l++; string res = "(" + to_string(p.first) + ", " + to_string(p.second) + ")"; l_v_l_v_l--; return res; } template <typename A, typename... C> string to_string(const A (&v), int x1, int x2, C... coords) { int rnk = rank<A>::value; string tab(t_a_b_s, ' '); string res = ""; bool first = true; if(l_v_l_v_l == 0) res += n_l; res += tab + "["; x1 = min(x1, SIZE(v)), x2 = min(x2, SIZE(v)); auto l = begin(v); advance(l, x1); auto r = l; advance(r, (x2-x1) + (x2 < SIZE(v))); for (auto e = l; e != r; e = next(e)) { if (!first) { res += ", "; } first = false; l_v_l_v_l++; if(e != l){ if(rnk > 1) { res += n_l; t_a_b_s = l_v_l_v_l; }; } else{ t_a_b_s = 0; } res += to_string(*e, coords...); l_v_l_v_l--; } res += "]"; if(l_v_l_v_l == 0) res += n_l; return res; } void dbgm(){;} template<typename Heads, typename... Tails> void dbgm(Heads H, Tails... T){ cout << to_string(H) << " | "; dbgm(T...); } 
#define dbgm(...) cout << "[" << #__VA_ARGS__ << "]: "; dbgm(__VA_ARGS__); cout << endl


#define int long long int
#define MP make_pair
#define pb push_back
#define REP(i,n) for(int (i) = 0; (i) < (n); (i)++)

void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
}


const double EPS = 0.00001;
const int INF = 1e12+500;
const int N = 2e5+5;
const int ALPH = 26;
const int LGN = 25;
const int MOD = 1e9+7;
int n,m,q;
vector<int> p;
vector<array<int,2> > srtd;
set<int> occ;
int dp[N];
struct SegTree {
    vector<int> data;
    int sz;
    SegTree(int sz) {
        this->sz = sz;
        data.assign(4*sz, -INF);

    }
    void build(int tl ,int tr, int v, vector<int> &arr) {
        if(tl == tr) {
            data[v] = arr[tl];
            return;
        }
        int tm = (tl + tr) >> 1;
        build(tl, tm, v*2, arr);
        build(tm + 1, tr, v*2+1, arr);
        data[v] = max(data[v*2], data[v*2+1]);
    }
    void build(vector<int> &arr) {
        assert(arr.size() == sz);
        build(0, sz - 1, 1, arr);
    }
    void update(int tl, int tr, int v, int ind ,int val) {
        if(tl == tr) {
            data[v] = val;
            return;
        }
        int tm = (tl + tr) >> 1;
        if(ind <= tm) {
            update(tl, tm, v*2, ind ,val);
        }
        else {
            update(tm+1, tr ,v*2+1, ind, val);
        }
        data[v] = max(data[v*2], data[v*2+1]);
    }
    void update(int ind, int val) {
        update(0, sz - 1, 1, ind ,val);
    }
    int query(int tl, int tr, int v, int l, int r) {
        if(tl >= l && tr <= r) {
            return data[v];
        }
        if(tl > r || tr < l) {
            return -INF;
        }
        int tm = (tl + tr) >> 1;
        return max(query(tl, tm, v*2, l, r) , query(tm+1, tr, v*2+1, l, r));

    }
    int query(int l, int r) { 
        return query(0, sz - 1, 1, l , r);
    }

};



inline void solve() {
    cin>>n;
    srtd.resize(n);
    p.resize(n+1);
    REP(i,n) {
        cin>>p[i + 1];
        srtd[i] = {p[i + 1], i + 1};
        occ.insert(i + 1);
    }
    occ.insert(0);
    occ.insert(n + 1);
    sort(srtd.begin(), srtd.end());
    
    for(int i = 0; i<n-1; i++) {
        int a,b;
        cin>>a>>b;
    }
    SegTree subts(n + 1), sums(n + 1);
    dp[srtd[0][1]] = 0;
    occ.erase(srtd[0][1]);
    subts.update(srtd[0][1] , -srtd[0][1]);
    sums.update(srtd[0][1], srtd[0][1]);
    for(int ind = 1; ind<srtd.size(); ind++) {
        auto c = srtd[ind];
        occ.erase(c[1]);
        dp[c[1]] = 0;
        auto lbound = occ.lower_bound(c[1]);
        if(lbound != occ.begin()) 
        {
            lbound--;
            dp[c[1]] = max(dp[c[1]], c[1] + subts.query(*lbound, c[1]));
        }
        auto rbound = occ.upper_bound(c[1]);
        if(rbound != occ.end()) {
            dp[c[1]] = max(dp[c[1]], sums.query(c[1], *rbound) - c[1]);
        }
        subts.update(c[1], dp[c[1]] - c[1]);
        sums.update(c[1], dp[c[1]] + c[1]);
    }
    cout<<dp[srtd[srtd.size() - 1][1]]<<"\n";
    
}
 
signed main() {
    //freopen("milkvisits.in", "r", stdin);
    //freopen("milkvisits.out", "w", stdout);
    //fastio();
    int test = 1;
    //cin>>test;
    while(test--) {
        solve();
    }
    
}

Compilation message

Main.cpp: In function 'std::string to_string(std::string, int, int)':
Main.cpp:7:208: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 | template <typename T, size_t N> int SIZE(const T (&t)[N]){ return N; } template<typename T> int SIZE(const T &t){ return t.size(); } string to_string(const string s, int x1=0, int x2=1e9){ return '"' + ((x1 < s.size()) ? s.substr(x1, x2-x1+1) : "") + '"'; } string to_string(const char* s) { return to_string((string) s); } string to_string(const bool b) { return (b ? "true" : "false"); } string to_string(const char c){ return string({c}); } template<size_t N> string to_string(const bitset<N> &b, int x1=0, int x2=1e9){ string t = ""; for(int __iii__ = min(x1,SIZE(b)),  __jjj__ = min(x2, SIZE(b)-1); __iii__ <= __jjj__; ++__iii__){ t += b[__iii__] + '0'; } return '"' + t + '"'; } template <typename A, typename... C> string to_string(const A (&v), int x1=0, int x2=1e9, C... coords); int l_v_l_v_l = 0, t_a_b_s = 0; template <typename A, typename B> string to_string(const pair<A, B> &p) { l_v_l_v_l++; string res = "(" + to_string(p.first) + ", " + to_string(p.second) + ")"; l_v_l_v_l--; return res; } template <typename A, typename... C> string to_string(const A (&v), int x1, int x2, C... coords) { int rnk = rank<A>::value; string tab(t_a_b_s, ' '); string res = ""; bool first = true; if(l_v_l_v_l == 0) res += n_l; res += tab + "["; x1 = min(x1, SIZE(v)), x2 = min(x2, SIZE(v)); auto l = begin(v); advance(l, x1); auto r = l; advance(r, (x2-x1) + (x2 < SIZE(v))); for (auto e = l; e != r; e = next(e)) { if (!first) { res += ", "; } first = false; l_v_l_v_l++; if(e != l){ if(rnk > 1) { res += n_l; t_a_b_s = l_v_l_v_l; }; } else{ t_a_b_s = 0; } res += to_string(*e, coords...); l_v_l_v_l--; } res += "]"; if(l_v_l_v_l == 0) res += n_l; return res; } void dbgm(){;} template<typename Heads, typename... Tails> void dbgm(Heads H, Tails... T){ cout << to_string(H) << " | "; dbgm(T...); }
      |                                                                                                                                                                                                             ~~~^~~~~~~~~~
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from Main.cpp:1:
Main.cpp: In member function 'void SegTree::build(std::vector<long long int>&)':
Main.cpp:52:27: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   52 |         assert(arr.size() == sz);
      |                ~~~~~~~~~~~^~~~~
Main.cpp: In function 'void solve()':
Main.cpp:14:26: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   14 | #define REP(i,n) for(int (i) = 0; (i) < (n); (i)++)
      |                          ^
Main.cpp:95:5: note: in expansion of macro 'REP'
   95 |     REP(i,n) {
      |     ^~~
Main.cpp:113:25: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::array<long long int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  113 |     for(int ind = 1; ind<srtd.size(); ind++) {
      |                      ~~~^~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 440 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 440 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 440 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 440 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 444 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 440 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 440 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 444 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 6 ms 1116 KB Output is correct
19 Correct 6 ms 1116 KB Output is correct
20 Correct 6 ms 1112 KB Output is correct
21 Correct 7 ms 1116 KB Output is correct
22 Correct 7 ms 1116 KB Output is correct
23 Correct 7 ms 1116 KB Output is correct
24 Correct 7 ms 1240 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 440 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 440 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 444 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 6 ms 1116 KB Output is correct
19 Correct 6 ms 1116 KB Output is correct
20 Correct 6 ms 1112 KB Output is correct
21 Correct 7 ms 1116 KB Output is correct
22 Correct 7 ms 1116 KB Output is correct
23 Correct 7 ms 1116 KB Output is correct
24 Correct 7 ms 1240 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Incorrect 7 ms 1116 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 440 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 440 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 444 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 6 ms 1116 KB Output is correct
19 Correct 6 ms 1116 KB Output is correct
20 Correct 6 ms 1112 KB Output is correct
21 Correct 7 ms 1116 KB Output is correct
22 Correct 7 ms 1116 KB Output is correct
23 Correct 7 ms 1116 KB Output is correct
24 Correct 7 ms 1240 KB Output is correct
25 Correct 296 ms 32180 KB Output is correct
26 Correct 287 ms 32400 KB Output is correct
27 Correct 296 ms 32396 KB Output is correct
28 Correct 514 ms 32396 KB Output is correct
29 Correct 440 ms 32172 KB Output is correct
30 Correct 432 ms 32336 KB Output is correct
31 Correct 454 ms 32336 KB Output is correct

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 440 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 440 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 444 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 6 ms 1116 KB Output is correct
19 Correct 6 ms 1116 KB Output is correct
20 Correct 6 ms 1112 KB Output is correct
21 Correct 7 ms 1116 KB Output is correct
22 Correct 7 ms 1116 KB Output is correct
23 Correct 7 ms 1116 KB Output is correct
24 Correct 7 ms 1240 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Incorrect 7 ms 1116 KB Output isn't correct
27 Halted 0 ms 0 KB -