제출 #131278

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
131278		duality	Cats or Dogs (JOI18_catdog)	C++11	38 / 100	3046 ms	12000 KiB

catdog

#define DEBUG 0

#include <bits/stdc++.h>
using namespace std;

#if DEBUG
// basic debugging macros
int __i__,__j__;
#define printLine(l) for(__i__=0;__i__<l;__i__++){cout<<"-";}cout<<endl
#define printLine2(l,c) for(__i__=0;__i__<l;__i__++){cout<<c;}cout<<endl
#define printVar(n) cout<<#n<<": "<<n<<endl
#define printArr(a,l) cout<<#a<<": ";for(__i__=0;__i__<l;__i__++){cout<<a[__i__]<<" ";}cout<<endl
#define print2dArr(a,r,c) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<a[__i__][__j__]<<" ";}cout<<endl;}
#define print2dArr2(a,r,c,l) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<setw(l)<<setfill(' ')<<a[__i__][__j__]<<" ";}cout<<endl;}

// advanced debugging class
// debug 1,2,'A',"test";
class _Debug {
    public:
        template<typename T>
        _Debug& operator,(T val) {
            cout << val << endl;
            return *this;
        }
};
#define debug _Debug(),
#else
#define printLine(l)
#define printLine2(l,c)
#define printVar(n)
#define printArr(a,l)
#define print2dArr(a,r,c)
#define print2dArr2(a,r,c,l)
#define debug
#endif

// define
#define MAX_VAL 999999999
#define MAX_VAL_2 999999999999999999LL
#define EPS 1e-6
#define mp make_pair
#define pb push_back

// typedef
typedef unsigned int UI;
typedef long long int LLI;
typedef unsigned long long int ULLI;
typedef unsigned short int US;
typedef pair<int,int> pii;
typedef pair<LLI,LLI> plli;
typedef vector<int> vi;
typedef vector<LLI> vlli;
typedef vector<pii> vpii;
typedef vector<plli> vplli;

// ---------- END OF TEMPLATE ----------
#include "catdog.h"

int n;
vi adjList[100000];
int parent[100000],dp[100000][2];
int curr[100000];
int doDFS(int u,int p) {
    int i;
    parent[u] = p;
    for (i = 0; i < adjList[u].size(); i++) {
        int v = adjList[u][i];
        if (v != p) doDFS(v,u);
    }
    return 0;
}
void initialize(int N,vector<int> A,vector<int> B) {
    int i;
    n = N;
    for (i = 0; i < N-1; i++) {
        A[i]--,B[i]--;
        adjList[A[i]].pb(B[i]);
        adjList[B[i]].pb(A[i]);
    }
    doDFS(0,-1);
}
int update(int u) {
    int i;
    while (u != -1) {
        dp[u][0] = dp[u][1] = 0;
        for (i = 0; i < adjList[u].size(); i++) {
            int v = adjList[u][i];
            if (v != parent[u]) {
                dp[u][0] += min(dp[v][0],dp[v][1]+1);
                dp[u][1] += min(dp[v][1],dp[v][0]+1);
            }
        }
        if (curr[u] == 1) dp[u][1] = 1e9;
        else if (curr[u] == 2) dp[u][0] = 1e9;
        u = parent[u];
    }
    return 0;
}
int cat(int v) {
    v--,curr[v] = 1,update(v);
    return min(dp[0][0],dp[0][1]);
}
int dog(int v) {
    v--,curr[v] = 2,update(v);
    return min(dp[0][0],dp[0][1]);
}
int neighbor(int v) {
    v--,curr[v] = 0,update(v);
    return min(dp[0][0],dp[0][1]);
}

컴파일 시 표준 에러 (stderr) 메시지

catdog.cpp: In function 'int doDFS(int, int)':
catdog.cpp:66:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < adjList[u].size(); i++) {
                 ~~^~~~~~~~~~~~~~~~~~~
catdog.cpp: In function 'int update(int)':
catdog.cpp:86:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (i = 0; i < adjList[u].size(); i++) {
                     ~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 30 / 30
• Subtask 3: 0 / 62