Submission #744113

#	Time	Username	Problem	Language	Result	Execution time	Memory
744113		maomao90	Izvanzemaljci (COI21_izvanzemaljci)	C++17	26 / 100	49 ms	8140 KiB

izvanzemaljci

// 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> 
using namespace std;

#define int ll

#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 = 100005;

int n, k;
ii xy[MAXN];

namespace st1 {
    int main() {
        int mnx = INF, mxx = -INF, mny = INF, mxy = -INF;
        REP (i, 0, n) {
            mnto(mnx, xy[i].FI);
            mxto(mxx, xy[i].FI);
            mnto(mny, xy[i].SE);
            mxto(mxy, xy[i].SE);
        }
        cout << mnx << ' ' << mny << ' ' << max({mxx - mnx, mxy - mny, 1ll}) << '\n';
        return 0;
    }
}
namespace st2 {
    int pmnx[MAXN], pmxx[MAXN], pmny[MAXN], pmxy[MAXN];
    int smnx[MAXN], smxx[MAXN], smny[MAXN], smxy[MAXN];
    iii ans[2];
    int main() {
        int cost = 2 * INF;
        sort(xy, xy + n);
        pmnx[0] = INF, pmxx[0] = -INF, pmny[0] = INF, pmxy[0] = -INF;
        REP (i, 0, n) {
            mnto(pmnx[i], xy[i].FI);
            mxto(pmxx[i], xy[i].FI);
            mnto(pmny[i], xy[i].SE);
            mxto(pmxy[i], xy[i].SE);
            pmnx[i + 1] = pmnx[i];
            pmxx[i + 1] = pmxx[i];
            pmny[i + 1] = pmny[i];
            pmxy[i + 1] = pmxy[i];
        }
        smnx[n] = INF, smxx[n] = -INF, smny[n] = INF, smxy[n] = -INF;
        RREP (i, n - 1, 0) {
            smnx[i] = smnx[i + 1];
            smxx[i] = smxx[i + 1];
            smny[i] = smny[i + 1];
            smxy[i] = smxy[i + 1];
            mnto(smnx[i], xy[i].FI);
            mxto(smxx[i], xy[i].FI);
            mnto(smny[i], xy[i].SE);
            mxto(smxy[i], xy[i].SE);
        }
        REP (i, 0, n) {
            if (i + 1 != n && xy[i].FI == xy[i + 1].FI) {
                continue;
            }
            int lft = max({pmxx[i] - pmnx[i], pmxy[i] - pmny[i], 1ll}),
                rht = max({smxx[i + 1] - smnx[i + 1], smxy[i + 1] - smny[i + 1], 1ll});
            if (i + 1 == n) {
                rht = 1;
            }
            if (mnto(cost, max(lft, rht))) {
                ans[0] = {pmxx[i] - lft, pmny[i], lft};
                ans[1] = {smnx[i + 1], smny[i + 1], rht};
                if (i + 1 == n) {
                    ans[1] = {3e9, 3e9, 1};
                }
            }
        }
        sort(xy, xy + n, [&] (ii l, ii r) {
                return l.SE < r.SE;
                });
        pmnx[0] = INF, pmxx[0] = -INF, pmny[0] = INF, pmxy[0] = -INF;
        REP (i, 0, n) {
            mnto(pmnx[i], xy[i].FI);
            mxto(pmxx[i], xy[i].FI);
            mnto(pmny[i], xy[i].SE);
            mxto(pmxy[i], xy[i].SE);
            pmnx[i + 1] = pmnx[i];
            pmxx[i + 1] = pmxx[i];
            pmny[i + 1] = pmny[i];
            pmxy[i + 1] = pmxy[i];
        }
        smnx[n] = INF, smxx[n] = -INF, smny[n] = INF, smxy[n] = -INF;
        RREP (i, n - 1, 0) {
            smnx[i] = smnx[i + 1];
            smxx[i] = smxx[i + 1];
            smny[i] = smny[i + 1];
            smxy[i] = smxy[i + 1];
            mnto(smnx[i], xy[i].FI);
            mxto(smxx[i], xy[i].FI);
            mnto(smny[i], xy[i].SE);
            mxto(smxy[i], xy[i].SE);
        }
        REP (i, 0, n) {
            if (i + 1 == n || xy[i].SE == xy[i + 1].SE) {
                continue;
            }
            int lft = max({pmxx[i] - pmnx[i], pmxy[i] - pmny[i], 1ll}),
                rht = max({smxx[i + 1] - smnx[i + 1], smxy[i + 1] - smny[i + 1], 1ll});
            if (i + 1 == n) {
                rht = 1;
            }
            if (mnto(cost, max(lft, rht))) {
                ans[0] = {pmnx[i], pmxy[i] - lft, lft};
                ans[1] = {smnx[i + 1], smny[i + 1], rht};
                if (i + 1 == n) {
                    ans[1] = {3e9, 3e9, 1};
                }
            }
        }
        REP (z, 0, 2) {
            auto [a, b, c] = ans[z];
            cout << a << ' ' << b << ' ' << c << '\n';
        }
        return 0;
    }
}
namespace st5 {
    int cost;
    iii ans[3];
    int pmnx[MAXN], pmxx[MAXN], pmny[MAXN], pmxy[MAXN];
    int smnx[MAXN], smxx[MAXN], smny[MAXN], smxy[MAXN];
    void precomp(int s = 0, int e = n) {
        pmnx[s] = INF, pmxx[s] = -INF, pmny[s] = INF, pmxy[s] = -INF;
        REP (i, s, e) {
            mnto(pmnx[i], xy[i].FI);
            mxto(pmxx[i], xy[i].FI);
            mnto(pmny[i], xy[i].SE);
            mxto(pmxy[i], xy[i].SE);
            pmnx[i + 1] = pmnx[i];
            pmxx[i + 1] = pmxx[i];
            pmny[i + 1] = pmny[i];
            pmxy[i + 1] = pmxy[i];
        }
        smnx[e] = INF, smxx[e] = -INF, smny[e] = INF, smxy[e] = -INF;
        RREP (i, e - 1, s) {
            smnx[i] = smnx[i + 1];
            smxx[i] = smxx[i + 1];
            smny[i] = smny[i + 1];
            smxy[i] = smxy[i + 1];
            mnto(smnx[i], xy[i].FI);
            mxto(smxx[i], xy[i].FI);
            mnto(smny[i], xy[i].SE);
            mxto(smxy[i], xy[i].SE);
        }
    }
    void solve(int v) {
        { // 2 vertical partitions
            sort(xy, xy + n);
            precomp();
            int gd = -1;
            int stop = -3e9;
            ans[0] = {-3e9, -3e9, 1};
            REP (i, 0, n) {
                if (i + 1 != n && xy[i].SE == xy[i + 1].SE) {
                    continue;
                }
                int lft = max({pmxx[i] - pmnx[i], pmxy[i] - pmny[i], 1ll});
                if (lft <= v) {
                    ans[0] = {pmxx[i] - lft, pmny[i], lft};
                    gd = i;
                    stop = pmxx[i];
                }
            }
            precomp(gd + 1, n);
            int tcost = 2 * INF;
            REP (i, gd + 1, n) {
                if (i + 1 != n && xy[i].FI == xy[i + 1].FI) {
                    continue;
                }
                int lft = max({pmxx[i] - pmnx[i], pmxy[i] - pmny[i], 1ll}),
                    rht = max({smxx[i + 1] - smnx[i + 1], smxy[i + 1] - smny[i + 1], 1ll});
                if (i + 1 == n) {
                    rht = 1;
                } else if (stop + 1 + lft >= smnx[i + 1]) {
                    continue;
                }
                if (mnto(tcost, max(lft, rht))) {
                    ans[1] = {max(pmxx[i] - lft, stop + 1), pmny[i], lft};
                    ans[2] = {smnx[i + 1], smny[i + 1], rht};
                    if (i + 1 == n) {
                        ans[2] = {3e9, 3e9, 1};
                    }
                }
            }
            if (tcost <= v) {
                cost = v;
                return;
            }
        }
        /*
        { // 1 vertical partition followed by 1 horizontal partition
            sort(xy, xy + n);
            precomp();
            int gd = -1;
            ans[0] = {-3e9, -3e9, 1};
            REP (i, 0, n) {
                if (i + 1 != n && xy[i].SE == xy[i + 1].SE) {
                    continue;
                }
                int lft = max({pmxx[i] - pmnx[i], pmxy[i] - pmny[i], 1ll});
                if (lft <= v) {
                    ans[0] = {pmxx[i] - lft, pmny[i], lft};
                    gd = i;
                }
            }
            precomp(gd + 1, n);
            int tcost = 2 * INF;
            REP (i, gd + 1, n - 1) {
                if (xy[i].FI == xy[i + 1].FI) {
                    continue;
                }
                int lft = max({pmxx[i] - pmnx[i], pmxy[i] - pmny[i], 1ll}),
                    rht = max({smxx[i + 1] - smnx[i + 1], smxy[i + 1] - smny[i + 1], 1ll});
                if (stop + 1 + lft >= smnx[i + 1]) {
                    continue;
                }
                if (mnto(tcost, max(lft, rht))) {
                    ans[1] = {max(pmxx[i] - lft, stop + 1), pmny[i], lft};
                    ans[2] = {smnx[i + 1], smny[i + 1], rht};
                }
            }
            if (tcost <= v) {
                cost = v;
                return;
            }
        }
        */
    }
    int check(int v) {
        cost = 2 * INF;
        REP (z, 0, 4) {
            if (cost > v) {
                solve(v);
            }
            REP (i, 0, n) {
                int nx = -xy[i].SE, ny = xy[i].FI;
                xy[i] = {nx, ny};
            }
            REP (i, 0, 3) {
                auto [x, y, l] = ans[i];
                int nx = -y - l, ny = x;
                ans[i] = {nx, ny, l};

            }
        }
        return cost <= v;
    }
    int main() {
        int lo = 1, hi = 2 * INF;
        while (lo < hi) {
            int mid = lo + hi + 1 >> 1;
            if (check(mid)) {
                lo = mid;
            } else {
                hi = mid - 1;
            }
        }
        check(lo);
        REP (z, 0, 3) {
            auto [a, b, c] = ans[z];
            cout << a << ' ' << b << ' ' << c << '\n';
        }
        return 0;
    }
}

main() {
#ifndef DEBUG
    ios::sync_with_stdio(0), cin.tie(0);
#endif
    cin >> n >> k;
    REP (i, 0, n) {
        cin >> xy[i].FI >> xy[i].SE;
    }
    if (k == 1) {
        return st1::main();
    } else if (k == 2) {
        return st2::main();
    } else {
        return st5::main();
    }
}

Compilation message (stderr)

izvanzemaljci.cpp: In function 'll st5::main()':
izvanzemaljci.cpp:285:31: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  285 |             int mid = lo + hi + 1 >> 1;
      |                       ~~~~~~~~^~~
izvanzemaljci.cpp: At global scope:
izvanzemaljci.cpp:301:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  301 | main() {
      | ^~~~

• Subtask 1: 5 / 5
• Subtask 2: 21 / 21
• Subtask 3: 0 / 12
• Subtask 4: 0 / 30
• Subtask 5: 0 / 32