제출 #122023

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
122023	2019-06-27 11:40:08	KLPP	Designated Cities (JOI19_designated_cities)	C++14	23 / 100	2047 ms	75652 KiB

designated_cities

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#include<bits/stdc++.h>
using namespace std;
typedef long long int lld;
typedef pair<lld,lld> pii;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define trav(a,v) for(auto a:v)
vector<pii> nei[200000];
vector<pii> inv[200000];
set<int> leaves;
map<int,lld> tree[200000];
int n;
vector<int> V;
void correct(){
  rep(i,0,n){
    if(tree[i].size()==2){
      //cout<<i<<endl;
      trav(x,tree[i]){
  V.push_back(x.first);
      }
      //cout<<V[0]<<" "<<V[1]<<endl;
      lld go=tree[V[0]][i]+tree[i][V[1]];
      lld come=tree[V[1]][i]+tree[i][V[0]];
      tree[V[0]].erase(tree[V[0]].find(i));
      tree[V[1]].erase(tree[V[1]].find(i));
      tree[V[0]][V[1]]=go;
      tree[V[1]][V[0]]=come;
      V.clear();
      tree[i].clear();
    }
 
 
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컴파일 시 표준 에러 (stderr) 메시지

designated_cities.cpp: In function 'int main()':
designated_cities.cpp:89:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&n);
   ~~~~~^~~~~~~~~
designated_cities.cpp:93:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %lld %lld",&x,&y,&z,&w);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
designated_cities.cpp:136:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&q);
   ~~~~~^~~~~~~~~
designated_cities.cpp:139:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&x);
     ~~~~~^~~~~~~~~

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