Submission #2550841

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
int MAX_M = 100005;

int main () {
  int n, m;
  scanf("%d %d", &n, &m);
  int a[MAX_M];
  int u[MAX_M];
  for (int i=0; i<m; i++) {
    scanf("%d", &a[i]);
    u[i] = false;
  }

  for (int i=m-1; i>=0; i--) {
    if (u[a[i]] == false) {
      printf("%d\n", a[i]);
      u[a[i]] = true;
    }
  }
  for (int i=1; i<m+1; i++) {
    if (u[i] == false) printf("%d\n", i);
  }

  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:9:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &n, &m);
                         ^
./Main.cpp:13:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &a[i]);
                       ^

Judge Result