Submission #1338456

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Source Code Expand

#include<bits/stdc++.h>
#define rep(i,n)for(int i=0;i<(n);i++)
#define MOD 1000000007
using namespace std;
typedef long long ll;
typedef pair<int, int>P;

P a[200000];
int cnt[2];
int main() {
	int n; scanf("%d", &n);
	rep(i, n)scanf("%d", &a[i].first);
	rep(i, n)scanf("%d", &a[n + i].first), a[n + i].second = 1;
	sort(a, a + 2 * n);
	ll ans = 1;
	rep(i, 2 * n) {
		if (cnt[!a[i].second]) {
			ans *= cnt[!a[i].second]; cnt[!a[i].second]--;
		}
		else cnt[a[i].second]++;
	}
	printf("%lld\n", ans);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:11:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  int n; scanf("%d", &n);
                        ^
./Main.cpp:12:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  rep(i, n)scanf("%d", &a[i].first);
                                   ^
./Main.cpp:13:60: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  rep(i, n)scanf("%d", &a[n + i].first), a[n + i].second = 1;
                                                            ^

Judge Result