Submission #336657

#	Time	Username	Problem	Language	Result	Execution time	Memory
336657		Joshc	Question (Grader is different from the original contest) (CEOI14_question_grader)	C++11	Compilation error	0 ms	0 KiB

encoder

#include <vector>
#include <algorithm>
using namespace std;

vector<int> ans[921];

void init() {
    if (ans[1].empty()) {
        int cur = 0;
        for (int i=1; i<=7; i++) {
            for (int j=i+1; j<=8; j++) {
                for (int k=j+1; k<=9; k++) {
                    for (int l=k+1; l<=10; l++) {
                        for (int m=l+1; m<=11; m++) {
                            for (int n=m+1; n<=12; n++) ans[++cur] = {i, j, k, l, m, n};
                        }
                    }
                }
            }
        }
    }
}

int createAdvice(int x, int y, int correct) {
    init();
    if (correct == y) swap(x, y);
    for (int i : ans[x]) {
        if (find(ans[y].begin(), ans[y].end(), i) == ans[y].end()) return i;
    }
}

decoder

#include <vector>
#include <algorithm>
using namespace std;

vector<int> ans[921];

void init() {
    if (ans[1].empty()) {
        int cur = 0;
        for (int i=1; i<=7; i++) {
            for (int j=i+1; j<=8; j++) {
                for (int k=j+1; k<=9; k++) {
                    for (int l=k+1; l<=10; l++) {
                        for (int m=l+1; m<=11; m++) {
                            for (int n=m+1; n<=12; n++) ans[++cur] = {i, j, k, l, m, n};
                        }
                    }
                }
            }
        }
    }
}

bool receiveAdvice(int q, int h) {
    init()
    return find(ans[q].begin(), ans[q].end(), h) != ans[q].end();
}

Compilation message (stderr)

encoder.cpp: In function 'int createAdvice(int, int, int)':
encoder.cpp:30:1: warning: control reaches end of non-void function [-Wreturn-type]
   30 | }
      | ^
/tmp/ccoBK83P.o: In function `main':
grader_encode.c:(.text.startup+0x129): undefined reference to `encode(int, int, int)'
collect2: error: ld returned 1 exit status

decoder.cpp: In function 'bool receiveAdvice(int, int)':
decoder.cpp:25:11: error: expected ';' before 'return'
   25 |     init()
      |           ^
      |           ;
   26 |     return find(ans[q].begin(), ans[q].end(), h) != ans[q].end();
      |     ~~~~~~ 
decoder.cpp:27:1: warning: no return statement in function returning non-void [-Wreturn-type]
   27 | }
      | ^