Submission #1131251

---

Source Code Expand

#include <iostream>
#include <fstream>
#include <set>
#include <map>
#include <string>
#include <vector>
#include <bitset>
#include <algorithm>
#include <cstring>
#include <cstdlib>
#include <cmath>
#include <cassert>
#include <queue>

#define mp make_pair
#define pb push_back


typedef long long ll;
typedef long double ld;

using namespace std;
const ll MOD = 1e9 + 7;

int n;
int x[120000];
int go[120000];

int main() {
	scanf("%d", &n);
	for (int i = 0; i < n; ++i)
		scanf("%d", x + i);
	int now = 0;
	int nx = -1;
	for (int i = 0; i < n; ++i) {
		go[now] = i + 1;
		nx += 2;
		while (x[i] < nx)
			nx -= 2, now += 1;
	}
	for (int i = now; i < n; ++i)
		go[i] = n;
	ll ans = 1;
	for (int i = 0; i < n; ++i) {
		ans = (ans * (go[i] - i)) % MOD;
	}
	cout << ans << "\n";
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:30:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^
./Main.cpp:32:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", x + i);
                     ^

Judge Result