提出 #38620359

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ソースコード 拡げる

#include <cstdio>
using namespace std;

int main() {
  int N, A[531441];
  scanf("%d", &N);
  int M = 1;
  for (int i = 0; i < N; i++) M *= 3;
  for (int i = 0; i < M; i++) scanf("%d", A + i);
  auto f = [&](int &x, int &y, int &z) {
    int nx = y - z;
    int ny = x - y + z;
    int nz = -x + y;
    x = nx, y = ny, z = nz;
  };
  for (int i = 1; i < M; i *= 3) {
    for (int js = 0; js < M; js += i * 3) {
      for (int j = js; j < js + i; j++) {
        f(A[j], A[j + i], A[j + i * 2]);
      }
    }
  }
  for (int i = 0; i < M; i++) printf("%d ", A[i]);
}

提出情報

コンパイルエラー

./Main.cpp: In function ‘int main()’:
./Main.cpp:6:8: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
    6 |   scanf("%d", &N);
      |   ~~~~~^~~~~~~~~~
./Main.cpp:9:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
    9 |   for (int i = 0; i < M; i++) scanf("%d", A + i);
      |                               ~~~~~^~~~~~~~~~~~~

ジャッジ結果