Submission #315999

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
315999	2020-10-24 19:04:05	semiauto	Sorting (IOI15_sorting)	C++14	Compilation error	0 ms	0 KiB

sorting

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#include <bits/stdc++.h>
using namespace std;
const int N=5000000;
int n,i,mas1[N],k,m,num1[N],mas[N],num[N],killer,ans1[N],ans2[N],ans,a[N],b[N];
int main()
  {
  cin>>n;
  for (i=0;i<n;i++)
    {
    scanf("%d",&mas[i]);
    num[mas[i]]=i;
    num1[mas[i]]=i;
    mas1[i]=mas[i];
    }
  cin>>m;
  for (killer=1;killer<=m;killer++)
      {
      scanf("%d",&a[k]);scanf("%d",&b[k]);
      swap(mas[a[k]],mas[b[k]]);
      swap(num[mas[a[k]]],num[mas[b[k]]]);k++;
      }
  for (i=0;i<n;i++)
    if (mas[i]!=i)
      {
      ans1[ans]=i;
      ans2[ans]=mas[i];
      swap(mas[i],mas[num[i]]);
      swap(num[mas[i]],num[mas[num[i]]]);
      ans++;
      }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

sorting.cpp: In function 'int main()':
sorting.cpp:10:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   10 |   scanf("%d",&mas[i]);
      |   ~~~~~^~~~~~~~~~~~~~
sorting.cpp:18:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   18 |    scanf("%d",&a[k]);scanf("%d",&b[k]);
      |    ~~~~~^~~~~~~~~~~~
sorting.cpp:18:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   18 |    scanf("%d",&a[k]);scanf("%d",&b[k]);
      |                      ~~~~~^~~~~~~~~~~~
/tmp/ccnfKWGb.o: In function `main':
grader.c:(.text.startup+0x0): multiple definition of `main'
/tmp/ccREhJl9.o:sorting.cpp:(.text.startup+0x0): first defined here
/tmp/ccnfKWGb.o: In function `main':
grader.c:(.text.startup+0x4a5): undefined reference to `findSwapPairs(int, int*, int, int*, int*, int*, int*)'
collect2: error: ld returned 1 exit status