Submission #1051059

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Source Code Expand

#include<stdio.h>
#include<algorithm>
using namespace std;
struct point{
    int ck, x;
    bool operator<(const point &p)const{
        return x<p.x;
    }
}w[201000];
int n, s;
long long res = 1;
int main(){
    int i, pv = -1, j;
    scanf("%d",&n);
    for(i=0;i<2*n;i++){
        scanf("%d",&w[i].x);
        w[i].ck = i/n;
    }
    sort(w,w+2*n);
    for(i=0;i<2*n;i++){
        s += w[i].ck*2-1;
        if(!s){
            for(j=1;j<=(i-pv)/2;j++)res=res*j%1000000007;
            pv = i;
        }
    }
    printf("%lld\n",res);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:14:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
                   ^
./Main.cpp:16:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&w[i].x);
                            ^

Judge Result