답안 #971269

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
971269 2024-04-28T09:23:54 Z aryanc403 커다란 상품 (IOI17_prize) C++17
20 / 100
582 ms 1048576 KB
/*
  Compete against Yourself.
  Author - Aryan (@aryanc403)
*/
/*
  Credits -
  Atcoder library - https://atcoder.github.io/ac-library/production/document_en/ (namespace atcoder)
  Github source code of library - https://github.com/atcoder/ac-library/tree/master/atcoder
  https://codeforces.com/contest/4/submission/150120627
*/

#ifdef ARYANC403
    #include <header.h>
#else
    #pragma GCC optimize ("Ofast")
    // #pragma GCC target ("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx")
    #pragma GCC target ("sse,sse2,mmx")
    #pragma GCC optimize ("-ffloat-store")
    #include <bits/stdc++.h>
    #include <ext/pb_ds/assoc_container.hpp>
    #include <ext/pb_ds/tree_policy.hpp>
    #define dbg(args...) 42;
    #define endl "\n"
#endif

// y_combinator from @neal template https://codeforces.com/contest/1553/submission/123849801
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0200r0.html
template<class Fun> class y_combinator_result {
    Fun fun_;
public:
    template<class T> explicit y_combinator_result(T &&fun): fun_(std::forward<T>(fun)) {}
    template<class ...Args> decltype(auto) operator()(Args &&...args) { return fun_(std::ref(*this), std::forward<Args>(args)...); }
};
template<class Fun> decltype(auto) y_combinator(Fun &&fun) { return y_combinator_result<std::decay_t<Fun>>(std::forward<Fun>(fun)); }

using namespace std;
#define fo(i,n)   for(i=0;i<(n);++i)
#define repA(i,j,n)   for(i=(j);i<=(n);++i)
#define repD(i,j,n)   for(i=(j);i>=(n);--i)
#define all(x) begin(x), end(x)
#define sz(x) ((lli)(x).size())
#define eb emplace_back
#define X first
#define Y second

using lli = int;
using mytype = long double;
using ii = pair<lli,lli>;
using vii = vector<ii>;
using vi = vector<lli>;

template <class T>
using ordered_set =  __gnu_pbds::tree<T,__gnu_pbds::null_type,less<T>,__gnu_pbds::rb_tree_tag,__gnu_pbds::tree_order_statistics_node_update>;
// X.find_by_order(k) return kth element. 0 indexed.
// X.order_of_key(k) returns count of elements strictly less than k.

// namespace Re = std::ranges;
// namespace Ve = std::ranges::views;

const lli SEED=chrono::steady_clock::now().time_since_epoch().count();
mt19937_64 rng(SEED);
inline lli rnd(lli l,lli r)
{return uniform_int_distribution<lli>(l,r)(rng);}

int find_best(int n);
std::vector<int> ask(int i);

const lli LIM = 4000;

int find_best(int n){
    const vector<int> bst = {0,0};
    if(n<=LIM){
        for(lli i=0;i<n;i++){
            if(ask(i)==bst)
                return i;
        }
    }

    vector<ii> dp(n,ii{-1,-1});
    lli ans = -1;
    auto getVal = [&](const lli i)->ii{
        if(dp[i].X!=-1)
            return dp[i];
        const auto res = ask(i);
        dp[i]={res[0],res[1]};
        if(res==bst)
            ans=i;
        return dp[i];
    };

    lli mxVal=0;
    for(lli it=0;it<100;it++){
        const lli v=rnd(0,n-1);
        const auto res=getVal(v);
        mxVal=max(mxVal,res.X+res.Y);
    }

    y_combinator([&](const auto &self,lli l,lli r)->void{
        if(ans!=-1)
            return;
        while(l<=r){
            const auto res=getVal(l);
            if(res.X+res.Y>=mxVal)
                break;
            l++;
        }

        while(l<=r){
            const auto res=getVal(r);
            if(res.X+res.Y>=mxVal)
                break;
            r--;
        }

        if(l>r)
            return;
        if(getVal(l).X==getVal(r).X)
            return;
        const lli mid = (l+r)/2;
        self(l,mid);
        self(mid,r);
    })(0,n-1);
    dbg(dp);
    assert(ans!=-1);
    return ans;
}

Compilation message

prize.cpp: In function 'int find_best(int)':
prize.cpp:22:26: warning: statement has no effect [-Wunused-value]
   22 |     #define dbg(args...) 42;
      |                          ^~
prize.cpp:123:5: note: in expansion of macro 'dbg'
  123 |     dbg(dp);
      |     ^~~
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1880 KB Output is correct
2 Correct 1 ms 1880 KB Output is correct
3 Correct 1 ms 1880 KB Output is correct
4 Correct 1 ms 2136 KB Output is correct
5 Correct 1 ms 1880 KB Output is correct
6 Correct 1 ms 1880 KB Output is correct
7 Correct 1 ms 1876 KB Output is correct
8 Correct 1 ms 1876 KB Output is correct
9 Correct 1 ms 1880 KB Output is correct
10 Correct 2 ms 1880 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1880 KB Output is correct
2 Correct 1 ms 1880 KB Output is correct
3 Correct 2 ms 1880 KB Output is correct
4 Correct 2 ms 1880 KB Output is correct
5 Correct 2 ms 2016 KB Output is correct
6 Correct 1 ms 1968 KB Output is correct
7 Correct 1 ms 1880 KB Output is correct
8 Correct 2 ms 1880 KB Output is correct
9 Correct 1 ms 1880 KB Output is correct
10 Correct 1 ms 1880 KB Output is correct
11 Correct 2 ms 1880 KB Output is correct
12 Correct 1 ms 1880 KB Output is correct
13 Correct 4 ms 1880 KB Output is correct
14 Correct 2 ms 600 KB Output is correct
15 Correct 5 ms 1880 KB Output is correct
16 Correct 21 ms 1880 KB Output is correct
17 Correct 1 ms 1876 KB Output is correct
18 Correct 22 ms 2012 KB Output is correct
19 Correct 1 ms 1880 KB Output is correct
20 Correct 6 ms 1236 KB Output is correct
21 Correct 10 ms 2012 KB Output is correct
22 Correct 3 ms 2128 KB Output is correct
23 Correct 1 ms 1880 KB Output is correct
24 Correct 2 ms 2132 KB Output is correct
25 Correct 13 ms 1880 KB Output is correct
26 Correct 12 ms 1880 KB Output is correct
27 Correct 2 ms 1880 KB Output is correct
28 Correct 20 ms 1880 KB Output is correct
29 Correct 15 ms 1880 KB Output is correct
30 Correct 28 ms 1880 KB Output is correct
31 Correct 1 ms 1880 KB Output is correct
32 Correct 3 ms 1880 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 7 ms 1880 KB Output is correct
35 Correct 2 ms 1880 KB Output is correct
36 Correct 5 ms 1880 KB Output is correct
37 Correct 2 ms 1880 KB Output is correct
38 Correct 1 ms 1880 KB Output is correct
39 Correct 9 ms 1880 KB Output is correct
40 Correct 16 ms 1880 KB Output is correct
41 Correct 11 ms 2016 KB Output is correct
42 Correct 10 ms 1880 KB Output is correct
43 Correct 13 ms 1880 KB Output is correct
44 Correct 9 ms 1880 KB Output is correct
45 Correct 7 ms 1880 KB Output is correct
46 Correct 1 ms 1880 KB Output is correct
47 Correct 10 ms 1880 KB Output is correct
48 Correct 17 ms 1876 KB Output is correct
49 Correct 3 ms 1880 KB Output is correct
50 Correct 20 ms 2136 KB Output is correct
51 Correct 8 ms 1880 KB Output is correct
52 Correct 2 ms 2016 KB Output is correct
53 Correct 2 ms 1880 KB Output is correct
54 Correct 8 ms 2016 KB Output is correct
55 Correct 2 ms 1880 KB Output is correct
56 Correct 25 ms 1880 KB Output is correct
57 Correct 18 ms 1876 KB Output is correct
58 Correct 14 ms 1880 KB Output is correct
59 Correct 12 ms 1880 KB Output is correct
60 Correct 12 ms 1880 KB Output is correct
61 Correct 2 ms 1880 KB Output is correct
62 Correct 1 ms 1880 KB Output is correct
63 Correct 2 ms 2084 KB Output is correct
64 Correct 2 ms 1880 KB Output is correct
65 Correct 2 ms 1880 KB Output is correct
66 Correct 3 ms 1880 KB Output is correct
67 Correct 3 ms 1880 KB Output is correct
68 Correct 3 ms 1880 KB Output is correct
69 Correct 4 ms 2040 KB Output is correct
70 Correct 3 ms 1880 KB Output is correct
71 Correct 25 ms 2016 KB Output is correct
72 Correct 3 ms 2020 KB Output is correct
73 Correct 22 ms 1880 KB Output is correct
74 Correct 25 ms 1880 KB Output is correct
75 Correct 2 ms 1880 KB Output is correct
76 Correct 25 ms 1880 KB Output is correct
77 Correct 28 ms 1880 KB Output is correct
78 Correct 3 ms 1880 KB Output is correct
79 Correct 12 ms 2016 KB Output is correct
80 Correct 28 ms 1880 KB Output is correct
81 Correct 26 ms 1880 KB Output is correct
82 Correct 26 ms 1880 KB Output is correct
83 Correct 2 ms 1880 KB Output is correct
84 Correct 18 ms 1880 KB Output is correct
85 Correct 24 ms 2016 KB Output is correct
86 Runtime error 582 ms 1048576 KB Execution killed with signal 9
87 Halted 0 ms 0 KB -