Submission #978086

#	Time	Username	Problem	Language	Result	Execution time	Memory
978086		Aybak	Sequence (APIO23_sequence)	C++17	Compilation error	0 ms	0 KiB

sequence

#include <iostream>

int Count(int* arr, int len, int var) {
    int out = 0;
    for (uint64_t i = 0; i < len; ++i) {
        if (arr[i] == var) {
            ++out; } }
    return out; }

int getMedianCount(int* arr, int len, int* sortedArrH) {
    memcpy(sortedArrH, arr, len * sizeof(int));
    std::qsort(sortedArrH, len, sizeof(int), [](const void* x, const void* y) { if (*(int*)x > *(int*)y) return 1; return 0; });


    if (len % 2 == 1) {
        return Count(sortedArrH, len, sortedArrH[len / 2]); }
    else {
        int M1 = Count(sortedArrH, len, sortedArrH[len / 2]);
        int M2 = Count(sortedArrH, len, sortedArrH[len / 2 - 1]);
        return std::max(M1, M2); } }


int sequence(int N, std::vector<int> A) {
    int* arr = A.data();
    int* sortedArrH = new int[N];
    int LM = 0;
    for (uint64_t i = 0; i < N; ++i) {
        for (uint64_t j = i + 1; j < N + 1; ++j) { // array is i include j exclude
            int LMH = getMedianCount(&arr[i], j - i, sortedArrH);
            if (LMH > LM) {
                LM = LMH; } } }

    delete[] sortedArrH;
    return LM; }

Compilation message (stderr)

sequence.cpp: In function 'int Count(int*, int, int)':
sequence.cpp:5:28: warning: comparison of integer expressions of different signedness: 'uint64_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
    5 |     for (uint64_t i = 0; i < len; ++i) {
      |                          ~~^~~~~
sequence.cpp: In function 'int getMedianCount(int*, int, int*)':
sequence.cpp:11:5: error: 'memcpy' was not declared in this scope
   11 |     memcpy(sortedArrH, arr, len * sizeof(int));
      |     ^~~~~~
sequence.cpp:2:1: note: 'memcpy' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    1 | #include <iostream>
  +++ |+#include <cstring>
    2 | 
sequence.cpp: At global scope:
sequence.cpp:23:21: error: 'std::vector' has not been declared
   23 | int sequence(int N, std::vector<int> A) {
      |                     ^~~
sequence.cpp:23:32: error: expected ',' or '...' before '<' token
   23 | int sequence(int N, std::vector<int> A) {
      |                                ^
sequence.cpp: In function 'int sequence(int, int)':
sequence.cpp:24:16: error: 'A' was not declared in this scope
   24 |     int* arr = A.data();
      |                ^
sequence.cpp:27:28: warning: comparison of integer expressions of different signedness: 'uint64_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   27 |     for (uint64_t i = 0; i < N; ++i) {
      |                          ~~^~~
sequence.cpp:28:36: warning: comparison of integer expressions of different signedness: 'uint64_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   28 |         for (uint64_t j = i + 1; j < N + 1; ++j) { // array is i include j exclude
      |                                  ~~^~~~~~~