제출 #90130

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
90130		Bodo171	바이오칩 (IZhO12_biochips)	C++14	0 / 100	6 ms	5288 KiB

biochips

#include <iostream>
#include <fstream>
#include <vector>
using namespace std;
const int nmax=200005;
vector<int> v[nmax];
int dp[2][nmax];
int rep[nmax],l[nmax],r[nmax],val[nmax];
int n,m,i,j,nr,tt,x,use;
void dfs(int x)
{
    rep[++nr]=x;l[x]=nr;
    for(int i=0;i<v[x].size();i++)
        dfs(v[x][i]);
    r[x]=nr;
}
int main()
{
    //freopen("data.in","r",stdin);
    ios_base::sync_with_stdio(false);
    cin>>n>>m;
    for(i=1;i<=n;i++)
    {
        cin>>tt>>val[i];
        v[tt].push_back(i);
    }
    dfs(v[0][0]);
    for(i=0;i<m;i++)
    {
      use=1-use;
      for(j=0;j<=n;j++)
        dp[1-use][j]=-(1<<30);
        for(j=1;j<=n;j++)
      {
        x=rep[j];
        dp[use][j]=max(dp[use][j],dp[use][j-1]);
        dp[1-use][r[x]]=max(dp[use][l[x]-1]+val[x],dp[1-use][r[x]]);
      }
    }
    cout<<dp[1-use][n];
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

biochips.cpp: In function 'void dfs(int)':
biochips.cpp:13:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v[x].size();i++)
                 ~^~~~~~~~~~~~
biochips.cpp: In function 'int main()':
biochips.cpp:31:7: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
       for(j=0;j<=n;j++)
       ^~~
biochips.cpp:33:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
         for(j=1;j<=n;j++)
         ^~~

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