Submission #1987257

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Source Code Expand

#include<iostream>
#include<cstdio>
#include<cstring>
#include<map>
#include<cstdlib>
#include<stack>
#include<queue>
#include<algorithm>
#include<set>
#include<vector>
#include<cmath>
#include<string>
#include<bitset>
#define lmid l,mid,rt<<1
#define rmid mid+1,r,rt<<1|1
#define ll long long
using namespace std;
set<int>s;
int main()
{
     int n;
     scanf("%d",&n);
     for(int i=0;i<n;i++)
     {
          int a;
          scanf("%d",&a);
          s.insert(a);
     }
     printf("%d\n",s.size());
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:29:28: 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:22:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
      scanf("%d",&n);
                    ^
./Main.cpp:26:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
           scanf("%d",&a);
                         ^

Judge Result