Submission #385039

#	Time	Username	Problem	Language	Result	Execution time	Memory
385039		thecodingwizard	ČVENK (COI15_cvenk)	C++11	17 / 100	35 ms	5992 KiB

cvenk

#include <bits/stdc++.h>

using namespace std;

using ll = long long;
#define ii pair<ll, ll>
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define F0R(i, n) for (int i = 0; i < n; i++)
#define FOR(i, a, b) for (int i = a; i < b; i++)
#define inf 1000000010

vector<ii> A;

void clean() {
    for (int i = 30; ~i; i--) {
        bool allF = 1;
        for (auto x : A) {
            if (!(x.f & (1 << i))) allF = 0;
        }
        bool allS = 1;
        for (auto x : A) {
            if (!(x.s & (1 << i))) allS = 0;
        }
        bool any = 0;
        for (auto x : A) {
            if (x.f & (1 << i)) any = 1;
            if (x.s & (1 << i)) any = 1;
        }
        if (allF) {
            for (auto &x : A) {
                x.f ^= (1 << i);
            }
        } else if (allS) {
            for (auto &x : A) {
                x.s ^= (1 << i);
            }
        } else if (any) {
            break;
        }
    }
}

// true if left, false if up
// second number is distance from that axis
pair<bool, ll> calc(ii x) {
    int dir = -1;
    ll dist = 0;
    for (int i = 30; ~i; i--) {
        int curDir = -1;
        if (x.f & (1 << i)) {
            curDir = 1;
        } else if (x.s & (1 << i)) {
            curDir = 0;
        }
        if (dir == -1) dir = curDir;
        if (curDir != -1 && curDir != dir) break;
        if (curDir != -1) dist += (1 << i);
    }
    return make_pair(dir, dist);
}

int main() {
    cin.tie(0)->sync_with_stdio(0);

    int n; cin >> n;
    A.resize(n);
    F0R(i, n) cin >> A[i].f >> A[i].s;

    clean();

    vector<pair<bool, ll>> res;
    for (auto x : A) res.push_back(calc(x));

    //for (auto x : A) cout << x.f << " " << x.s << endl;

    ll totSum = 0;
    for (auto x : A) totSum += x.f + x.s;

    bool allSame = 1;
    for (auto x : res) {
        if (x.f != res[0].f) allSame = 0;
    }

    if (allSame) {
        ll minDist = 1e18;
        for (auto x : res) minDist = min(minDist, x.s);
        cout << totSum - (ll)n*minDist << endl;
    } else {
        cout << totSum << endl;
    }

    return 0;
}

• Subtask 1: 17 / 17
• Subtask 2: 0 / 21
• Subtask 3: 0 / 22
• Subtask 4: 0 / 40