Submission #770368

#	Time	Username	Problem	Language	Result	Execution time	Memory
770368		Plurm	Flights (JOI22_flights)	C++17	0 / 100	19 ms	928 KiB

Ali

#include "Ali.h"
#include <string>
#include <vector>
using namespace std;

namespace {

const int MODX = 1024;
const int MODY = 1024;
int N;
vector<int> g[10005];

} // namespace

int dist(int u, int v, int p = -1) {
    int mn = 1e9;
    if (u == v)
        return 0;
    for (int w : g[u]) {
        if (w == p)
            continue;
        mn = min(mn, dist(w, v, u) + 1);
    }
    return mn;
}

void Init(int N, std::vector<int> U, std::vector<int> V) {
    ::N = N;
    for (int i = 0; i < N; i++)
        SetID(i, i);
    for (int i = 0; i < 10005; i++)
        g[i].clear();
    for (int i = 0; i < N - 1; i++) {
        g[U[i]].push_back(V[i]);
        g[V[i]].push_back(U[i]);
    }
}

std::string SendA(std::string S) {
    int mx = 0;
    int my = 0;
    for (int i = 0; i < 10; i++) {
        if (S[i] == '1')
            mx |= 1 << i;
    }
    for (int i = 0; i < 10; i++) {
        if (S[10 + i] == '1')
            my |= 1 << i;
    }
    std::string out;
    for (int i = 0; i < N; i++) {
        if (i % MODX == mx) {
            for (int j = 0; j < N; j++) {
                if (j % MODY == my) {
                    int d = dist(i, j);
                    for (int b = 0; b < 14; b++) {
                        if (d & (1 << b))
                            out.push_back('1');
                        else
                            out.push_back('0');
                    }
                }
            }
        }
    }
    return out;
}

Benjamin

#include "Benjamin.h"
#include <string>
#include <vector>
using namespace std;

namespace {

const int MODX = 1024;
const int MODY = 1024;
int N, X, Y;

} // namespace

std::string SendB(int N, int X, int Y) {
    ::N = N;
    ::X = X;
    ::Y = Y;
    int mx = X % MODX;
    int my = Y % MODY;
    std::string msg;
    for (int i = 0; i < 10; i++) {
        if (mx & (1 << i))
            msg.push_back('1');
        else
            msg.push_back('0');
    }
    for (int i = 0; i < 10; i++) {
        if (my & (1 << i))
            msg.push_back('1');
        else
            msg.push_back('0');
    }
    return msg;
}

int Answer(std::string T) {
    int mx = X % MODX;
    int my = Y % MODY;
    int c = 0;
    for (int i = 0; i < N; i++)
        if (i % MODY == my)
            c++;
    int idx = X / MODX * c + Y / MODY;
    int d = 0;
    for (int i = 0; i < 14; i++) {
        if (T[idx + i] == '1')
            d |= 1 << i;
    }
    return d;
}

Compilation message (stderr)

grader_ali.cpp:10:8: warning: '{anonymous}::_randmem' defined but not used [-Wunused-variable]
   10 |   char _randmem[12379];
      |        ^~~~~~~~

Benjamin.cpp: In function 'int Answer(std::string)':
Benjamin.cpp:37:9: warning: unused variable 'mx' [-Wunused-variable]
   37 |     int mx = X % MODX;
      |         ^~

• Subtask 1: 0 / 15
• Subtask 2: 0 / 85