Submission #2036989

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Source Code Expand

#include<cstdio>
#include<iostream>
using namespace std;

typedef long long ll;
const int MOD = 1e9 + 7;

int main()
{
    int n, x, k = 0;
    ll ans = 1;
    scanf("%d", &n);
    while(n--)
    {
        scanf("%d", &x);
        k++;
        if(x < 2 * k - 1)
        {
            ans = ans * k % MOD;
            k--;
        }
    }
    for(int i = 2; i <= k; i++)
        ans = ans * i % MOD;
    printf("%d\n", (int)ans);
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:12:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
                    ^
./Main.cpp:15:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &x);
                        ^

Judge Result