Submission #2424955

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Source Code Expand

#include <cstdio>
#include <set>

using namespace std;

int main(void){
  int n;
  set<int> s;
  
  scanf("%d", &n);
  for (int i=0; i<n; i++){
    int t;
    scanf("%d", &t);
    s.insert(t);
  }
  
  printf("%d\n", s.size());
  
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:17:26: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘std::set<int>::size_type {aka long unsigned int}’ [-Wformat=]
   printf("%d\n", s.size());
                          ^
./Main.cpp:10:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
                  ^
./Main.cpp:13:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &t);
                    ^

Judge Result