Submission #243420

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
243420	2020-07-01 04:20:21	mhy908	Wild Boar (JOI18_wild_boar)	C++14	100 / 100	9252 ms	418508 KiB

wild_boar

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#include <bits/stdc++.h>
#define eb emplace_back
#define mp make_pair
#define F first
#define S second
using namespace std;
typedef long long LL;
typedef pair<int, int> pii;
typedef pair<int, LL> pil;
const LL llinf=2e18;
int n, m, q, len;
int num[2010][2010], re;
vector<pii> link[2010];
LL dist[4010][4010];
bool ch[4010];
priority_queue<pair<LL, pii>, vector<pair<LL, pii> >, greater<pair<LL, pii> > > pq;
void do_dijk(int s, int e){
    memset(ch, 0, sizeof ch);
    pq.push(mp(0ll, mp(s, e)));
    dist[num[s][e]][num[s][e]]=0;
    while(!pq.empty()){
        LL d=pq.top().F;
        int fr=pq.top().S.F, nw=pq.top().S.S;
        pq.pop();
        if(ch[num[fr][nw]])continue;
        ch[num[fr][nw]]=true;
        for(auto j:link[nw]){
            if(j.F!=fr&&dist[num[s][e]][num[nw][j.F]]>d+j.S){
 
 
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Compilation message (stderr)

wild_boar.cpp: In function 'int main()':
wild_boar.cpp:88:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d %d", &n, &m, &q, &len);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
wild_boar.cpp:91:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d", &a, &b, &c);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
wild_boar.cpp:127:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i=1; i<=len; i++)scanf("%d", &arr[i]);
                              ~~~~~^~~~~~~~~~~~~~~
wild_boar.cpp:131:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &a, &b);
         ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 35 / 35
• Subtask 3: 15 / 15
• Subtask 4: 38 / 38