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Submission #722954

# Submission time Handle Problem Language Result Execution time Memory
722954 2023-04-13T06:20:26 Z The_Samurai Flight to the Ford (BOI22_communication) C++17
0 / 100
 798 ms 1740 KB 
#include "bits/stdc++.h"
#include "communication.h"
using namespace std;
//
// --- Sample implementation for the task communication ---
//
// To compile this program with the sample grader, place:
//     communication.h communication_sample.cpp sample_grader.cpp
// in a single folder, then open the terminal in this directory (right-click onto an empty spot in the directory,
// left click on "Open in terminal") and enter e.g.:
//     g++ -std=c++17 communication_sample.cpp sample_grader.cpp
// in this folder. This will create a file a.out in the current directory which you can execute from the terminal
// as ./a.out
// See task statement or sample_grader.cpp for the input specification
//
void encode(int N, int X) {
    vector<int> a(2);
    a[1] = (X / 2) % 2;
    a[0] = X % 2;
    for (int i = 0; i < 125; i++) {
        send(a[0]);
        send(a[1]);
    }
}

std::pair<int, int> decode(int N) {
    vector<pair<int, int>> a(2);
    for (int i = 0; i < 124; i++) {
        int now = receive();
        now += receive() * 2;
        if (now == 3) continue;
        if (now == 0) return {1, 2};
        if (now == 1) return {1, 3};
        if (now == 2) return {2, 3};
    }
}

Compilation message

communication.cpp: In function 'std::pair<int, int> decode(int)':
communication.cpp:27:31: warning: control reaches end of non-void function [-Wreturn-type]
   27 |     vector<pair<int, int>> a(2);
      |                               ^

Subtask #1
0.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 120 ms 1684 KB Output is correct
2 Correct 162 ms 1740 KB Output is correct
3 Incorrect 230 ms 200 KB Security violation!
4 Halted 0 ms 0 KB -

Subtask #2
0.0 / 85.0

# Verdict Execution time Memory Grader output
1 Incorrect 798 ms 220 KB Not correct
2 Halted 0 ms 0 KB -