Submission #226476

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
226476	2020-04-23 23:11:37	thebes	Olympic Bus (JOI20_ho_t4)	C++14	100 / 100	364 ms	162656 KiB

ho_t4

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
#define pb push_back
const int MN = 202, MM = 5e4+5;
int N, M, i, j, x, y, w[MM], c[MM], u[MM], vs[MN], ban[MM], par[MN]; ll ans, dis[MN], a[MM][MN], b[MM][MN], cost[MM];
vector<pii> adj[MN], rev[MN];
vi tree; pii ed[MM];
void dij(int src,bool dir){
    memset(par,-1,sizeof(par));
    memset(vs,0,sizeof(vs));
    for(i=1;i<=N;i++)
        dis[i]=1LL<<55;
    dis[src]=0;
    int cur=src; ll mn;
    while(cur!=-1){
        vs[cur]=1;
        if(dir==1){
            for(auto v : adj[cur]){
                if(ban[v.second]) continue;
                if(dis[cur]+w[v.second]<dis[v.first]){
                    dis[v.first]=dis[cur]+w[v.second];
                    par[v.first]=v.second;
                }
 
 
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Compilation message (stderr)

In file included from /usr/include/c++/7/cassert:44:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:33,
                 from ho_t4.cpp:1:
ho_t4.cpp: In function 'int main()':
ho_t4.cpp:79:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         assert(tree.size()<=N);
                ~~~~~~~~~~~^~~
ho_t4.cpp:97:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         assert(tree.size()<=N);
                ~~~~~~~~~~~^~~
ho_t4.cpp:58:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(scanf("%d%d",&N,&M),i=1;i<=M;i++){
         ~~~~~~~~~~~~~~~~~~~^~~~
ho_t4.cpp:59:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d%d",&x,&y,&w[i],&c[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 11 / 11
• Subtask 3: 21 / 21
• Subtask 4: 63 / 63