oj.uz

답안 #420035

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
420035 2021-06-08T01:24:30 Z Ozy 꿈 (IOI13_dreaming) C++17
14 / 100
 79 ms 24132 KB 
#include "dreaming.h"
#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for (int i = (a); i <= (b); i++)
#define repa(i,a,b) for (int i = (a); i >= (b); i--)
#define lli long long int
#define debugsl(a) cout << #a << " = " << a << ", "
#define debug(a) cout << #a << " = " << a << endl

#define des first
#define val second

lli act,res;
lli visitados[100002],MIN[2];
vector<pair<lli,lli> > hijos[100002],caminos[100002];

lli DSF(lli pos, lli padre) {
    lli tiem = 0;
    lli a = 0;
    lli k = 0;

    visitados[pos] = 1;
    for (auto h : hijos[pos]) {
        if (h.des == padre) {tiem = h.val;continue;}
        a = DSF(h.des,pos);
        caminos[pos].push_back({h.des,a});
        if (a > k) k = a;
    }

    return a + tiem;
}

void optimo(lli pos, lli padre, lli suma) {
    lli dd,prim = 0;
    lli a,seg = 0;

    for (auto h : caminos[pos]) {
        if (h.val > prim){
            seg = prim;
            prim = h.val;
            dd = h.des;
        }
        else if (h.val > seg) seg = h.val;
    }

    a = max(prim,suma);
    if (a < MIN[act]) MIN[act] = a;
    a = prim + seg;
    if (a > res) res = a;

    for (auto h : hijos[pos]) {
        if (h.des == padre) continue;

        if (h.des == dd) optimo(h.des,pos,(max(suma,seg)+h.val));
        else optimo(h.des,pos,(max(suma,prim)+h.val));
    }
}

void procesa(lli pos) {

    lli a = DSF(pos,0);
    optimo(pos,0,0);

}

int travelTime(int N, int M, int L, int A[], int B[], int T[]) {

    rep(i,0,M-1) {
        hijos[A[i]].push_back({B[i],T[i]});
        hijos[B[i]].push_back({A[i],T[i]});
    }

    act = 0;
    res = 0;
    MIN[0] = 1ll<<62;
    MIN[1] = 1ll<<62;

    rep(i,1,N) {
        if (act == 2) break;

        if (visitados[i] == 0) {
            procesa(i);
            act++;
        }
    }

    act = MIN[0] + MIN[1] + L;
    res = max(res,act);
    return res;
}

Compilation message

dreaming.cpp: In function 'void procesa(long long int)':
dreaming.cpp:61:9: warning: unused variable 'a' [-Wunused-variable]
   61 |     lli a = DSF(pos,0);
      |         ^
dreaming.cpp: In function 'void optimo(long long int, long long int, long long int)':
dreaming.cpp:54:9: warning: 'dd' may be used uninitialized in this function [-Wmaybe-uninitialized]
   54 |         if (h.des == dd) optimo(h.des,pos,(max(suma,seg)+h.val));
      |         ^~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 67 ms 21476 KB Output is correct
2 Correct 67 ms 24132 KB Output is correct
3 Correct 42 ms 15668 KB Output is correct
4 Correct 13 ms 7288 KB Output is correct
5 Correct 9 ms 6476 KB Output is correct
6 Correct 16 ms 9160 KB Output is correct
7 Correct 3 ms 5004 KB Output is correct
8 Correct 34 ms 11540 KB Output is correct
9 Correct 46 ms 14588 KB Output is correct
10 Correct 4 ms 5132 KB Output is correct
11 Correct 67 ms 17808 KB Output is correct
12 Correct 79 ms 21356 KB Output is correct
13 Correct 3 ms 5136 KB Output is correct

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 4940 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 67 ms 21476 KB Output is correct
2 Correct 67 ms 24132 KB Output is correct
3 Correct 42 ms 15668 KB Output is correct
4 Correct 13 ms 7288 KB Output is correct
5 Correct 9 ms 6476 KB Output is correct
6 Correct 16 ms 9160 KB Output is correct
7 Correct 3 ms 5004 KB Output is correct
8 Correct 34 ms 11540 KB Output is correct
9 Correct 46 ms 14588 KB Output is correct
10 Correct 4 ms 5132 KB Output is correct
11 Correct 67 ms 17808 KB Output is correct
12 Correct 79 ms 21356 KB Output is correct
13 Correct 3 ms 5136 KB Output is correct
14 Incorrect 3 ms 4940 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 20 ms 7336 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 4940 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 67 ms 21476 KB Output is correct
2 Correct 67 ms 24132 KB Output is correct
3 Correct 42 ms 15668 KB Output is correct
4 Correct 13 ms 7288 KB Output is correct
5 Correct 9 ms 6476 KB Output is correct
6 Correct 16 ms 9160 KB Output is correct
7 Correct 3 ms 5004 KB Output is correct
8 Correct 34 ms 11540 KB Output is correct
9 Correct 46 ms 14588 KB Output is correct
10 Correct 4 ms 5132 KB Output is correct
11 Correct 67 ms 17808 KB Output is correct
12 Correct 79 ms 21356 KB Output is correct
13 Correct 3 ms 5136 KB Output is correct
14 Incorrect 3 ms 4940 KB Output isn't correct
15 Halted 0 ms 0 KB -