10.23 洛谷分治

CF468C Hack It! 构造

#include<cstdio>
#include<iostream>
#include<algorithm>
#include<queue>
#include<stack>

using namespace std;
typedef long long ll;
ll a, b, INF = 1e18;

int main(){
    
    scanf("%lld",&a);
    b = (INF % a * 9 % a * 9 % a + 1 % a) % a;
    ll l = a - b + 1 , r = INF + a - b;
    
    printf("%lld %lld
", l , r); 
    
    return 0;
}

l≠0