oj.uz

답안 #994802

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
994802 2024-06-08T06:09:19 Z 김은성(#10865) 봉쇄 시간 (IOI23_closing) C++17
35 / 100
 1000 ms 41020 KB 
#include "closing.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
vector<pair<int, ll> > graph[200009];
int inv[200009];
ll psum[200009], distx[200009], disty[200009], predistx[200009], predisty[200009], predistmx[200009];
void dfs(int v, int cur, ll dist){
    if(inv[v] != -1)
        return;
    inv[v] = cur;
    psum[cur] = dist;
    int i;
    for(i=0; i<graph[v].size(); i++){
        dfs(graph[v][i].first, cur+1, dist + graph[v][i].second);
    }
}
int max_score(int N, int X, int Y, long long K,
              std::vector<int> U, std::vector<int> V, std::vector<int> W){
    int i, j;
    for(i=0; i<N; i++){
        graph[i].clear();
        inv[i] = -1;
        psum[i] = -1;
    }
    for(i=0; i<N-1; i++){
        graph[U[i]].push_back(make_pair(V[i], W[i]));
        graph[V[i]].push_back(make_pair(U[i], W[i]));
    }
    for(i=0; i<N; i++){
        if(graph[i].size() == 1){
            dfs(i, 0, 0);
            break;
        }
    }
    X = inv[X];
    Y = inv[Y];
    for(i=0; i<N; i++){
        distx[i] = abs(psum[X] - psum[i]);
        disty[i] = abs(psum[Y] - psum[i]);
        predistx[i] = (i==0 ? 0 : predistx[i-1]) + distx[i];
        predisty[i] = (i==0 ? 0 : predisty[i-1]) + disty[i];
        predistmx[i] = (i==0 ? 0 : predistmx[i-1]) + max(distx[i], disty[i]);
    }
    if(X > Y)
        swap(X, Y);
    vector<ll> temp;
    vector<pair<ll, int> > ret;
    for(i=0; i<X; i++){
        temp.push_back(distx[i]);
    }
    for(i=Y+1; i<N; i++){
        temp.push_back(disty[i]);
    }
    sort(temp.begin(), temp.end());
    ret.push_back(make_pair(0, 0));
    for(i=0; i<temp.size(); i++){
        ret.push_back(make_pair((i==0 ? 0 : ret.back().first) + temp[i], i+1));
    }
    int mx = 0;
    for(i=X; i<=Y; i++){
        for(j=X; j<=Y; j++){
            ll curdist = 0;
            if(i < j){
                curdist += predistx[i] - (X==0 ? 0 : predistx[X-1]);
                curdist += predisty[Y] - (j==0 ? 0 : predisty[j-1]);
            }
            else{
                curdist += (j==0 ? 0 : predistx[j-1]) - (X==0 ? 0 : predistx[X-1]);
                curdist += predistmx[i] - (j==0 ? 0 : predistmx[j-1]);
                curdist += predisty[Y] - predisty[i];
            }
            //printf("i=%d j=%d curdist=%lld\n", i, j, curdist);
            if(curdist > K)
                continue;
            vector<pair<ll, int> >::iterator it = lower_bound(ret.begin(), ret.end(), make_pair(K-curdist+1, 0))-1;
            //printf("i=%d j=%d curdist=%lld more=%d\n", i, j, curdist, it->second);
            mx = max((i-X+1) + (Y-j+1) + it->second, mx);
        }
    }
    for(i=0; i<=X; i++){
        ll curdist = predisty[Y] - (i==0 ? 0 : predisty[i-1]);
        if(curdist > K)
            continue;
        int now = (Y-i+1);
        vector<ll> temp;
        for(j=0; j<N; j++){
            if(i<=j && j<=Y)
                temp.push_back(max(distx[j] - disty[j], 0ll));
            else
                temp.push_back(distx[j]);
        }
        for(j=Y+1; j<N; j++){
            temp.push_back(disty[j]);
        }
        //printf("i=%d curdist=%lld\n", i, curdist);
        sort(temp.begin(), temp.end());
        for(j=0; j<temp.size(); j++){
            curdist += temp[j];
            //printf("j=%d\n", j);
            if(curdist > K)
                break;
        }
        mx = max(now + j,mx);
    }
    //printf("mx=%d\n", mx);
    //printf("done\n");
    for(i=Y; i<N; i++){
        ll curdist = predistx[i] - (X==0 ? 0 : predistx[X-1]);
        if(curdist > K)
            continue;
        int now = (i-X+1);
        vector<ll> temp;
        for(j=0; j<N; j++){
            if(X<=j && j<=i)
                temp.push_back(max(disty[j] - distx[j], 0ll));
            else
                temp.push_back(disty[j]);
        }
        for(j=0; j<X; j++){
            temp.push_back(distx[j]);
        }
        sort(temp.begin(), temp.end());
        for(j=0; j<temp.size(); j++){
            curdist += temp[j];
            if(curdist > K)
                break;
        }
        mx = max(now + j,mx);
    }
    //printf("mx=%d\n", mx);
    ll curdist = predistmx[Y] - (X==0 ? 0 : predistmx[X-1]);
    curdist -= disty[X] + distx[Y];
    if(curdist <= K){
        ll temp1[6009];
        for(i=0; i<=6008; i++)
            temp1[i] = 0x3fffffffffffffff;
        temp1[0] = temp1[1] = -1;
        for(i=0; i<=X; i++){
            for(j=0; j<=i; j++){
                int now = (X-i+1) + (X-j+1);
                temp1[now] = min(temp1[now], predisty[X] - (i==0 ? 0 : predisty[i-1]) +
                                (i==0 ? 0 : predistx[i-1]) - (j==0 ? 0 : predistx[j-1]));
            }
        }
        for(i=Y; i<N; i++){
            for(j=i; j<N; j++){
                ll cur = predistx[i] - (Y==0 ? 0 : predistx[Y-1]) +
                            predisty[j] - predisty[i];
                if(cur + curdist <= K){
                    int ttt = lower_bound(temp1, temp1+6009, K-curdist-cur + 1) - temp1 - 1;
                    if(ttt<2) continue;
                    mx = max((i-Y+1) + (j-Y+1) + 2*(Y-X-1) + ttt, mx);
                }
            }
        }
    }
    //printf("mx=%d\n", mx);
    return mx;
}

Compilation message

closing.cpp: In function 'void dfs(int, int, ll)':
closing.cpp:14:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for(i=0; i<graph[v].size(); i++){
      |              ~^~~~~~~~~~~~~~~~
closing.cpp: In function 'int max_score(int, int, int, long long int, std::vector<int>, std::vector<int>, std::vector<int>)':
closing.cpp:57:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |     for(i=0; i<temp.size(); i++){
      |              ~^~~~~~~~~~~~
closing.cpp:98:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   98 |         for(j=0; j<temp.size(); j++){
      |                  ~^~~~~~~~~~~~
closing.cpp:124:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  124 |         for(j=0; j<temp.size(); j++){
      |                  ~^~~~~~~~~~~~

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 14940 KB 1st lines differ - on the 1st token, expected: '6', found: '5'
2 Halted 0 ms 0 KB -

Subtask #1
0.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1063 ms 41020 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 14936 KB Output is correct
2 Correct 2 ms 14936 KB Output is correct
3 Correct 2 ms 14940 KB Output is correct
4 Correct 2 ms 14936 KB Output is correct
5 Correct 2 ms 14936 KB Output is correct
6 Correct 2 ms 15196 KB Output is correct
7 Correct 2 ms 15196 KB Output is correct
8 Correct 2 ms 14940 KB Output is correct
9 Correct 2 ms 14940 KB Output is correct
10 Correct 2 ms 14940 KB Output is correct
11 Correct 2 ms 14940 KB Output is correct

Subtask #3
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 14936 KB Output is correct
2 Correct 2 ms 14936 KB Output is correct
3 Correct 2 ms 14940 KB Output is correct
4 Correct 2 ms 14936 KB Output is correct
5 Correct 2 ms 14936 KB Output is correct
6 Correct 2 ms 15196 KB Output is correct
7 Correct 2 ms 15196 KB Output is correct
8 Correct 2 ms 14940 KB Output is correct
9 Correct 2 ms 14940 KB Output is correct
10 Correct 2 ms 14940 KB Output is correct
11 Correct 2 ms 14940 KB Output is correct
12 Correct 2 ms 15196 KB Output is correct
13 Correct 2 ms 15196 KB Output is correct
14 Correct 3 ms 15196 KB Output is correct
15 Correct 2 ms 15196 KB Output is correct
16 Correct 2 ms 15196 KB Output is correct
17 Correct 2 ms 15196 KB Output is correct
18 Correct 3 ms 15200 KB Output is correct
19 Correct 7 ms 15196 KB Output is correct
20 Correct 3 ms 15196 KB Output is correct
21 Correct 4 ms 15196 KB Output is correct
22 Correct 2 ms 15196 KB Output is correct
23 Correct 3 ms 15196 KB Output is correct
24 Correct 2 ms 15196 KB Output is correct

Subtask #4
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 14936 KB Output is correct
2 Correct 2 ms 14936 KB Output is correct
3 Correct 2 ms 14940 KB Output is correct
4 Correct 2 ms 14936 KB Output is correct
5 Correct 2 ms 14936 KB Output is correct
6 Correct 2 ms 15196 KB Output is correct
7 Correct 2 ms 15196 KB Output is correct
8 Correct 2 ms 14940 KB Output is correct
9 Correct 2 ms 14940 KB Output is correct
10 Correct 2 ms 14940 KB Output is correct
11 Correct 2 ms 14940 KB Output is correct
12 Correct 2 ms 15196 KB Output is correct
13 Correct 2 ms 15196 KB Output is correct
14 Correct 3 ms 15196 KB Output is correct
15 Correct 2 ms 15196 KB Output is correct
16 Correct 2 ms 15196 KB Output is correct
17 Correct 2 ms 15196 KB Output is correct
18 Correct 3 ms 15200 KB Output is correct
19 Correct 7 ms 15196 KB Output is correct
20 Correct 3 ms 15196 KB Output is correct
21 Correct 4 ms 15196 KB Output is correct
22 Correct 2 ms 15196 KB Output is correct
23 Correct 3 ms 15196 KB Output is correct
24 Correct 2 ms 15196 KB Output is correct
25 Correct 7 ms 15192 KB Output is correct
26 Correct 260 ms 15704 KB Output is correct
27 Correct 6 ms 15704 KB Output is correct
28 Correct 33 ms 15452 KB Output is correct
29 Correct 120 ms 15712 KB Output is correct
30 Correct 3 ms 15704 KB Output is correct
31 Correct 22 ms 15452 KB Output is correct
32 Correct 22 ms 15652 KB Output is correct

Subtask #5
0.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 14940 KB 1st lines differ - on the 1st token, expected: '6', found: '5'
2 Halted 0 ms 0 KB -

Subtask #6
0.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 14940 KB 1st lines differ - on the 1st token, expected: '6', found: '5'
2 Halted 0 ms 0 KB -

Subtask #7
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 14940 KB 1st lines differ - on the 1st token, expected: '6', found: '5'
2 Halted 0 ms 0 KB -

Subtask #8
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 14940 KB 1st lines differ - on the 1st token, expected: '6', found: '5'
2 Halted 0 ms 0 KB -

Subtask #9
0.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 14940 KB 1st lines differ - on the 1st token, expected: '6', found: '5'
2 Halted 0 ms 0 KB -