Submission #597941

#	Time	Username	Problem	Language	Result	Execution time	Memory
597941		maomao90	Art Collections (BOI22_art)	C++17	100 / 100	1670 ms	636 KiB

art

// Hallelujah, praise the one who set me free
// Hallelujah, death has lost its grip on me
// You have broken every chain, There's salvation in your name
// Jesus Christ, my living hope
#include <bits/stdc++.h> 
#include "art.h"
using namespace std;

#define REP(i, s, e) for (int i = (s); i < (e); i++)
#define RREP(i, s, e) for (int i = (s); i >= (e); i--)
template <class T>
inline bool mnto(T& a, T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T& a, T b) {return a < b ? a = b, 1: 0;}
typedef long long ll;
typedef long double ld;
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define SZ(_a) (int) _a.size()
#define pb push_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
typedef vector<iii> viii;

#ifndef DEBUG
#define cerr if (0) cerr
#endif

const int INF = 1000000005;
const ll LINF = 1000000000000000005ll;
const int MAXN = 4005;

int n;

vi shift(vi p) {
    vi res(n, 0);
    REP (i, 1, n) {
        res[i - 1] = p[i];
    }
    res[n - 1] = p[0];
    return res;
}

void solve(int N) {
    n = N;
    vi p(n, 0), id(n, 0);
    iota(ALL(p), 1);
    id = p;
    int b = publish(id);
    ll sm = n * (n + 1) / 2;
    REP (i, 0, n - 1) {
        id = shift(id);
        int tmp = publish(id);
        int x = n + 1 - tmp + b;
        assert(x % 2 == 0);
        x /= 2;
        p[x - 1] = i + 1;
        b = tmp;
        sm -= x;
    }
    p[sm - 1] = n;
    answer(p);
}

Compilation message (stderr)

interface.cpp: In function 'int publish(std::vector<int>)':
interface.cpp:20:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   20 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~
interface.cpp: In function 'void answer(std::vector<int>)':
interface.cpp:36:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~

• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 20 / 20
• Subtask 6: 30 / 30