Submission #4184220

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
     
#define MAX 100002
#define MOD 1000000007
int n;
vector<pair<int,int> > v;
int main(){
	cin>>n;
	for(int i=0;i<n;i++){
		int a;
		scanf("%d",&a);
		v.push_back(make_pair(a,0));
	}
	for(int i=0;i<n;i++){
		int a;
		scanf("%d",&a);
		v.push_back(make_pair(a,1));
	}
	sort(v.begin(),v.end());
	int cnt=0;
	int p=-1;
	long long int way=1;
	for(int i=0;i<v.size();i++){
		if(cnt==0){
			p=v[i].second;
			cnt=1;
			continue;
		}
		if(p!=v[i].second){
			way*=cnt;
			way%=MOD;
			cnt--;
			continue;
		}
		cnt++;
	}
	printf("%lld\n",way);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:12:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a);
                 ^
./Main.cpp:17:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a);
                 ^

Judge Result