답안 #949576

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
949576 2024-03-19T11:17:42 Z ace5 Rope (JOI17_rope) C++17
0 / 100
8 ms 29276 KB
#include <bits/stdc++.h>

using namespace std;

const int maxn = 1000001;

vector<int> cc[maxn];
set<pair<int,int>> ck;
int a[maxn];
int u[maxn];
int ans[maxn];

int main()
{
   // ios_base::sync_with_stdio(false);
   // cin.tie(0);
    int n,m;
    cin >> n >> m;
    for(int j = 0;j < n;++j)
    {
        cin >> a[j];
        a[j]--;
        cc[a[j]].push_back(j);
    }
    for(int j = 0;j < m;++j)
    {
        u[j] = cc[j].size();
        ck.insert({-u[j],j});
        ans[j] = n+1;
    }
    if(m == 1)
    {
        cout << 0;
        return 0;
    }
    for(int j = 0;j < m;++j)
    {
        int op = u[j];
        int xx = 0;
        for(int k = 0;k < cc[j].size();++k)
        {
            if(cc[j][k] == n-1 && n%2 == 1)
                break;
            int pr = a[cc[j][k]^1];
            ck.erase({-u[pr],pr});
        }
        for(int k = 0;k < cc[j].size();++k)
        {
            if(cc[j][k] == n-1 && n%2 == 1)
                break;
            int pr = a[cc[j][k]^1];
            u[pr]--;
        }
        for(int k = 0;k < cc[j].size();++k)
        {
            if(cc[j][k] == n-1 && n%2 == 1)
                break;
            int pr = a[cc[j][k]^1];
            xx = max(xx,u[pr]);
        }
        auto it = ck.begin();
        if(ck.size() && (*it).second == j)
        {
            it++;
        }
        int tk = min(-xx,(ck.size() <= 1 ? 0 : (*it).first));
        ans[j] = min(ans[j],n-op+tk);
        for(int k = 0;k < cc[j].size();++k)
        {
            if(cc[j][k] == n-1 && n%2 == 1)
                break;
            int pr = a[cc[j][k]^1];
            u[pr]++;
        }
        for(int k = 0;k < cc[j].size();++k)
        {
            if(cc[j][k] == n-1 && n%2 == 1)
                break;
            int pr = a[cc[j][k]^1];
            ck.insert({-u[pr],pr});
        }
    }
    for(int j = 0;j < m;++j)
    {
        int op = u[j];
        int xx = 0;
        for(int k = 0;k < cc[j].size();++k)
        {
            if(cc[j][k] == n-1 && n%2 == 0)
                break;
            if(cc[j][k] == 0)
                continue;
            int pr = a[((cc[j][k]-1)^1)+1];
            ck.erase({-u[pr],pr});
        }
        for(int k = 0;k < cc[j].size();++k)
        {
            if(cc[j][k] == n-1 && n%2 == 0)
                break;
            if(cc[j][k] == 0)
                continue;
            int pr = a[((cc[j][k]-1)^1)+1];
            u[pr]--;
        }
        for(int k = 0;k < cc[j].size();++k)
        {
            if(cc[j][k] == n-1 && n%2 == 0)
                break;
            if(cc[j][k] == 0)
                continue;
            int pr = a[((cc[j][k]-1)^1)+1];
            xx = max(xx,u[pr]);
        }
        auto it = ck.begin();
        if(ck.size() && (*it).second == j)
        {
            it++;
        }
        int tk = min(-xx,(ck.size() <= 1 ? 0 : (*it).first));
        ans[j] = min(ans[j],n-op+tk);
        for(int k = 0;k < cc[j].size();++k)
        {
            if(cc[j][k] == n-1 && n%2 == 0)
                break;
            if(cc[j][k] == 0)
                continue;
            int pr = a[((cc[j][k]-1)^1)+1];
            u[pr]++;
        }
        for(int k = 0;k < cc[j].size();++k)
        {
            if(cc[j][k] == n-1 && n%2 == 0)
                break;
            if(cc[j][k] == 0)
                continue;
            int pr = a[((cc[j][k]-1)^1)+1];
            ck.insert({-u[pr],pr});
        }
        cout << ans[j] << "\n";
    }
}

Compilation message

rope.cpp: In function 'int main()':
rope.cpp:40:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |         for(int k = 0;k < cc[j].size();++k)
      |                       ~~^~~~~~~~~~~~~~
rope.cpp:47:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |         for(int k = 0;k < cc[j].size();++k)
      |                       ~~^~~~~~~~~~~~~~
rope.cpp:54:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |         for(int k = 0;k < cc[j].size();++k)
      |                       ~~^~~~~~~~~~~~~~
rope.cpp:68:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |         for(int k = 0;k < cc[j].size();++k)
      |                       ~~^~~~~~~~~~~~~~
rope.cpp:75:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |         for(int k = 0;k < cc[j].size();++k)
      |                       ~~^~~~~~~~~~~~~~
rope.cpp:87:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   87 |         for(int k = 0;k < cc[j].size();++k)
      |                       ~~^~~~~~~~~~~~~~
rope.cpp:96:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   96 |         for(int k = 0;k < cc[j].size();++k)
      |                       ~~^~~~~~~~~~~~~~
rope.cpp:105:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |         for(int k = 0;k < cc[j].size();++k)
      |                       ~~^~~~~~~~~~~~~~
rope.cpp:121:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  121 |         for(int k = 0;k < cc[j].size();++k)
      |                       ~~^~~~~~~~~~~~~~
rope.cpp:130:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  130 |         for(int k = 0;k < cc[j].size();++k)
      |                       ~~^~~~~~~~~~~~~~
# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 29276 KB Output is correct
2 Correct 8 ms 29276 KB Output is correct
3 Correct 6 ms 29272 KB Output is correct
4 Incorrect 7 ms 29276 KB Output isn't correct
5 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 29276 KB Output is correct
2 Correct 8 ms 29276 KB Output is correct
3 Correct 6 ms 29272 KB Output is correct
4 Incorrect 7 ms 29276 KB Output isn't correct
5 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 29276 KB Output is correct
2 Correct 8 ms 29276 KB Output is correct
3 Correct 6 ms 29272 KB Output is correct
4 Incorrect 7 ms 29276 KB Output isn't correct
5 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 29276 KB Output is correct
2 Correct 8 ms 29276 KB Output is correct
3 Correct 6 ms 29272 KB Output is correct
4 Incorrect 7 ms 29276 KB Output isn't correct
5 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 29276 KB Output is correct
2 Correct 8 ms 29276 KB Output is correct
3 Correct 6 ms 29272 KB Output is correct
4 Incorrect 7 ms 29276 KB Output isn't correct
5 Halted 0 ms 0 KB -