Submission #529001

#	Time	Username	Problem	Language	Result	Execution time	Memory
529001		tabr	Data Transfer (IOI19_transfer)	C++17	0 / 100	3 ms	1004 KiB

transfer

#ifndef tabr
#include "transfer.h"
#endif
#include <bits/stdc++.h>
using namespace std;
#ifdef tabr
#include "library/debug.cpp"
#else
#define debug(...)
#endif

vector<int> get_attachment(vector<int> a) {
    int n = (int) a.size();
    vector<int> b;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < 3; j++) {
            b.emplace_back(a[i]);
        }
    }
    return b;
}

vector<int> retrieve(vector<int> a) {
    int n = (int) a.size();
    vector<int> b;
    for (int i = 0; i < n; i += 3) {
        b.emplace_back(0);
        for (int j = 0; j < 3; j++) {
            b.back() += a[j];
        }
        b.back() /= 2;
    }
    return b;
}

#ifdef tabr
mt19937 rng((unsigned int) chrono::steady_clock::now().time_since_epoch().count());

int rand_int(int a, int b) {  // [a, b]
    return uniform_int_distribution<int>(a, b)(rng);
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n = 7;
    int tt = 1000;
    while (tt--) {
        vector<int> a(n);
        for (int i = 0; i < n; i++) {
            a[i] = rand_int(0, 1);
        }
        auto b = get_attachment(a);
        int pos = rand_int(-1, (int) b.size() - 1);
        if (pos >= 0) {
            b[pos] ^= 1;
        }
        auto c = retrieve(b);
        if (a == c) {
            // cerr << "OK" << endl;
        } else {
            cerr << "NG" << endl;
            debug(pos);
            debug(a);
            debug(b);
            debug(c);
        }
    }
    return 0;
}
#endif

• Subtask 1: 0 / 60
• Subtask 2: 0 / 40