Submission #6371565

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Source Code Expand

#include<bits/stdc++.h>
#define st first
#define nd second
#define pb push_back
#define pf push_front
#define ppb pop_back
#define ppf pop_front
#define umax(x,y) x=max(x,y)
#define umin(x,y) x=min(x,y)
#define ll long long
#define ii pair<int,int>
#define iii pair<int,ii>
#define iiii pair<ii,ii>
#define sz(x) ((int) x.size())
#define orta ((bas+son)/2)
#define all(x) x.begin(),x.end()
#define inf 1000000005
#define MOD 1000000007 
#define N 300005
#define M 1000000
#define LOG 17
#define KOK 300
#define EPS 0.0000001
using namespace std;


int main() {

	int n;

	scanf("%d",&n);

	if(n%3) {

		printf("No");

		return 0;

	}

	vector<int> v(n);

	for(int i=0;i<n;i++) scanf("%d",&v[i]);

	sort(all(v));	

	vector<int> cnts;

	for(int i=0;i<n;i++) {

		int cur=1;

		while(i+1<n && v[i]==v[i+1]) {

			i++;
			cur++;

		}

		cnts.pb(cur);

	}

	if(sz(cnts)!=3 || cnts[0]!=cnts[1] || cnts[1]!=cnts[2] || cnts[0]!=cnts[2]) {

		printf("No");

	}
	else printf("Yes");

}	

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:31:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
./Main.cpp:43:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  for(int i=0;i<n;i++) scanf("%d",&v[i]);
                                        ^

Judge Result