Submission #907386

#	Time	Username	Problem	Language	Result	Execution time	Memory
907386		lighton	Road Construction (JOI21_road_construction)	C++17	5 / 100	2097 ms	2097152 KiB

road_construction

#include <bits/stdc++.h>
#define forf(i,a,b) for(int i = a; i<=b; i++)
#define all(v) v.begin(),v.end()
#define fi first
#define se second
using namespace std;
typedef long long ll;
int N,K;
ll X[1000001],Y[1000001];
pair<ll,ll> Xind[1000001] , Yind[100001];
set<pair<ll,ll> > S;
ll inf = 1e18;

ll ab(ll x){ return x<0?-x:x;}
vector<ll> All;
void naive(){
    forf(i,1,N){
        forf(j,i+1,N){
            All.push_back(max(ab(X[i]-X[j]),ab(Y[i]-Y[j])));
        }
    }
    sort(all(All));
    forf(i,0,K-1) printf("%lld\n" , All[i]);
}
int main(){
    scanf("%d %d" , &N,&K);
    forf(i,1,N) scanf("%lld %lld" , &X[i] , &Y[i]);
    forf(i,1,N){
        ll x = X[i], y = Y[i];
        X[i] = x+y;
        Y[i] = x-y;
        Xind[i] = {X[i],i};
        Yind[i] = {Y[i],i};
    }
    sort(Xind+1,Xind+N+1); sort(Yind+1,Yind+N+1);
    naive();
}

Compilation message (stderr)

road_construction.cpp: In function 'int main()':
road_construction.cpp:26:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     scanf("%d %d" , &N,&K);
      |     ~~~~~^~~~~~~~~~~~~~~~~
road_construction.cpp:27:22: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |     forf(i,1,N) scanf("%lld %lld" , &X[i] , &Y[i]);
      |                 ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 6
• Subtask 3: 0 / 7
• Subtask 4: 0 / 20
• Subtask 5: 0 / 27
• Subtask 6: 0 / 35