Submission #9654

#	Time	Username	Problem	Language	Result	Execution time	Memory
9654		moonrabbit2	Wiring (kriii2_W)	C++98	1 / 4	20 ms	2072 KiB

P

#include <cstdio>
int n;
bool link[1005][1005];
int ans;
int main()
{
    scanf("%d",&n);
    int k=0,p,p2;
    for(p=1;p<=n*n;p++){
        int a=(k+p)%n;
        if(k!=a&&link[a][k]==false&&link[k][a]==false){
            ans++;
            link[a][k]=true;
            link[k][a]=true;
        }
        k=(k+p)%n;
    }
    printf("%d",ans);
    return 0;
}

• Subtask 1: 1 / 1
• Subtask 2: 0 / 3