Submission #218072

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
218072	2020-04-01 00:58:58	achibasadzishvili	Capital City (JOI20_capital_city)	C++14	100 / 100	1039 ms	39704 KiB

capital_city

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#include<bits/stdc++.h>
#define ll long long
#define f first
#define s second
#define pb push_back
#define N 200005
using namespace std;
ll ans,ch[N],p[N],siz,center,fi[N],fix[N],ra[N],raod[N],c[N],n,k;
vector<ll>ver,v[N],fer[N];
queue<ll>q;
void calc(ll x,ll par){
    ch[x] = 1;
    siz++;
    for(int i=0; i<v[x].size(); i++)
        if(v[x][i] != par && !fix[v[x][i]]){
            calc(v[x][i] , x);
            ch[x] += ch[v[x][i]];
        }
}
void findcenter(ll x,ll par){
    if(center)return;
    for(int i=0; i<v[x].size(); i++)
        if(!fix[v[x][i]] && v[x][i] != par && ch[v[x][i]] >= (siz / 2))
            findcenter(v[x][i] , x);
    if(!center)center = x;
}
void go(ll x,ll par){
    ra[c[x]]++;
    fer[c[x]].pb(x);
    p[x] = par;
 
 
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Compilation message (stderr)

capital_city.cpp: In function 'void calc(long long int, long long int)':
capital_city.cpp:14:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<v[x].size(); i++)
                  ~^~~~~~~~~~~~
capital_city.cpp: In function 'void findcenter(long long int, long long int)':
capital_city.cpp:22:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<v[x].size(); i++)
                  ~^~~~~~~~~~~~
capital_city.cpp: In function 'void go(long long int, long long int)':
capital_city.cpp:32:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<v[x].size(); i++)
                  ~^~~~~~~~~~~~
capital_city.cpp: In function 'void solve(long long int)':
capital_city.cpp:45:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<ver.size(); i++){
                  ~^~~~~~~~~~~
capital_city.cpp:62:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int i=0; i<fer[c[p[t]]].size(); i++){
                          ~^~~~~~~~~~~~~~~~~~~~
capital_city.cpp:72:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<ver.size(); i++){
                  ~^~~~~~~~~~~
capital_city.cpp:78:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<v[x].size(); i++)
                  ~^~~~~~~~~~~~

• Subtask 1: 1 / 1
• Subtask 2: 10 / 10
• Subtask 3: 30 / 30
• Subtask 4: 59 / 59