foo.c: In function 'main':
foo.c:8:6: error: 'i' undeclared (first use in this function)
    8 |  for(i=1;i<=n;i++)
      |      ^
foo.c:8:6: note: each undeclared identifier is reported only once for each function it appears in
foo.c:12:2: error: variable-sized object may not be initialized
   12 |  int dp[n+1]={0};
      |  ^~~
foo.c:12:15: warning: excess elements in array initializer
   12 |  int dp[n+1]={0};
      |               ^
foo.c:12:15: note: (near initialization for 'dp')
foo.c:6:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    6 |     scanf("%d%d",&n,&m);
      |     ^~~~~~~~~~~~~~~~~~~

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