제출 #939285

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
939285		fdnfksd	City Mapping (NOI18_citymapping)	C++14	0 / 100	41 ms	10856 KiB

citymapping

#include<bits/stdc++.h>
#include "citymapping.h"

#define pb push_back
#define pli pair<ll,ll>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=long long;
const ll maxn=2e5;
const ll inf=1e18;
const ll mod=1e9+7;
pli cc[maxn];
ll dis[1005][1005];
ll d[maxn];
void find_roads(int N, int Q, int A[], int B[], int W[])
{
    ll n=N,q=Q;
    if(q==(ll)5e5)
    {
        for(int i=1;i<=n;i++)
        {
            for(int j=i+1;j<=n;j++)
            {
                dis[i][j]=get_distance(i,j);
                dis[j][i]=dis[i][j];
            }
        }
        for(int i=2;i<=n;i++)
        {
            ll luu=0;
            for(int j=1;j<=n;j++)
            {
                if(i==j) continue;
                if(dis[i][1]==dis[j][1]+dis[i][j])
                {
                    if(luu=0) luu=j;
                    else
                    {
                        if(dis[i][luu]>dis[i][j]) luu=j;
                    }
                }
            }
            A[i-1]=i;
            B[i-1]=luu;
            W[i-1]=dis[i][luu];
        }
    }
    else
    {
        ll luu=1;
        for(int i=1;i<=n;i++)
        {
            d[i]=get_distance(i,1);
            if(d[i]>d[luu]) luu=i;
        }
        vector<pli>cc;
        for(int i=1;i<=n;i++)
        {
            cc.pb({get_distance(i,1),(ll)i});
        }
        sort(cc.begin(),cc.end());
        for(int i=1;i<cc.size();i++)
        {
            A[i]=cc[i].se;
            B[i]=cc[i-1].se;
            W[i]=cc[i].fi-cc[i-1].fi;
        }
    }
}

컴파일 시 표준 에러 (stderr) 메시지

citymapping.cpp: In function 'void find_roads(int, int, int*, int*, int*)':
citymapping.cpp:38:27: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   38 |                     if(luu=0) luu=j;
      |                        ~~~^~
citymapping.cpp:64:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |         for(int i=1;i<cc.size();i++)
      |                     ~^~~~~~~~~~

• Subtask 1: 0 / 9
• Subtask 2: 0 / 16
• Subtask 3: 0 / 13
• Subtask 4: 0 / 19
• Subtask 5: 0 / 43