제출 #121535

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
121535		duality	Designated Cities (JOI19_designated_cities)	C++11	6 / 100	2066 ms	25228 KiB

designated_cities

#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 ----------

struct edge { int v,c,d; };
vector<edge> adjList[200000];
LLI ans[200001];
int parent[200000],pw[200000],disc[200000],fin[200000],num = 0;
LLI pp[200000];
int done[200000];
LLI sum2 = 0;
int doDFS(int u,int p,LLI d) {
    int i;
    parent[u] = p,pp[u] = d,disc[u] = num++;
    for (i = 0; i < adjList[u].size(); i++) {
        int v = adjList[u][i].v;
        if (v != p) pw[v] = adjList[u][i].c,doDFS(v,u,d+adjList[u][i].c),sum2 += adjList[u][i].d;
    }
    fin[u] = num;
    return 0;
}
int main() {
    int i;
    int N,Q;
    int A,B,C,D;
    LLI sum = 0;
    scanf("%d",&N);
    for (i = 0; i < N-1; i++) {
        scanf("%d %d %d %d",&A,&B,&C,&D);
        A--,B--;
        adjList[A].pb((edge){B,C,D});
        adjList[B].pb((edge){A,D,C});
        sum += C+D;
    }

    int j,k;
    for (i = 0; i < N; i++) {
        sum2 = 0;
        doDFS(i,-1,0);
        ans[1] = max(ans[1],sum2);
        fill(done,done+N,0);
        for (j = 2; j <= N; j++) {
            int mi = 0;
            for (k = 0; k < N; k++) {
                if (pp[k] > pp[mi]) mi = k;
            }
            sum2 += pp[mi];
            ans[j] = max(ans[j],sum2);
            while (!done[mi] && (mi != i)) {
                for (k = 0; k < N; k++) {
                    if ((disc[k] >= disc[mi]) && (disc[k] < fin[mi])) pp[k] -= pw[mi];
                }
                done[mi] = 1,mi = parent[mi];
            }
        }
    }

    int E;
    scanf("%d",&Q);
    for (i = 0; i < Q; i++) {
        scanf("%d",&E);
        printf("%lld\n",sum-ans[E]);
    }

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

designated_cities.cpp: In function 'int doDFS(int, int, LLI)':
designated_cities.cpp:68:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < adjList[u].size(); i++) {
                 ~~^~~~~~~~~~~~~~~~~~~
designated_cities.cpp: In function 'int main()':
designated_cities.cpp:80:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
     ~~~~~^~~~~~~~~
designated_cities.cpp:82:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d %d",&A,&B,&C,&D);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
designated_cities.cpp:112:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&Q);
     ~~~~~^~~~~~~~~
designated_cities.cpp:114:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&E);
         ~~~~~^~~~~~~~~

• Subtask 1: 6 / 6
• Subtask 2: 0 / 7
• Subtask 3: 0 / 9
• Subtask 4: 0 / 17
• Subtask 5: 0 / 17
• Subtask 6: 0 / 44