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Submission #799839

# Submission time Handle Problem Language Result Execution time Memory
799839 2023-08-01T06:03:32 Z 이동현(#10084) Chameleon's Love (JOI20_chameleon) C++17
24 / 100
 23 ms 464 KB 
#include "chameleon.h"
#include <bits/stdc++.h>
using namespace std;

namespace {

int variable_example = 1;

}  // namespace

vector<int> way[1004];
int chk[1004];

vector<int> l, r;

void Solve(int n) {
    for(int i = 1; i <= n * 2; ++i){
        auto add = [&](vector<int> x, int now){
            auto ask = x;
            ask.push_back(now);
            if(Query(ask) == (int)ask.size()){
                return;
            }

            int pos = 0;
            while(pos < (int)x.size() && (int)way[i].size() < 3){
                int low = pos, high = (int)x.size();
                while(low < high){
                    int mid = low + high >> 1;

                    vector<int> inask;
                    for(int j = low; j <= mid; ++j){
                        inask.push_back(x[j]);
                    }
                    inask.push_back(now);

                    if(Query(inask) == (int)inask.size()){
                        low = mid + 1;
                    }
                    else{
                        high = mid;
                    }
                }

                if(low == (int)x.size()) return;

                way[now].push_back(x[low]);
                way[x[low]].push_back(now);
                pos = low + 1;
            }
        };

        add(l, i);
        int sz1 = (int)way[i].size();
        add(r, i);
        int sz2 = (int)way[i].size();

        auto flip = [&](auto&&self, int x, int pr, int col)->void{
            if(col == 1){
                int p = 0;
                while(x != r[p]) ++p;
                swap(r[p], r.back());
                r.pop_back();
                l.push_back(x);
            }
            else{
                int p = 0;
                while(x != l[p]) ++p;
                swap(l[p], l.back());
                l.pop_back();
                r.push_back(x);
            }

            for(auto&nxt:way[x]){
                if(nxt == pr || nxt > i) continue;
                self(self, nxt, x, 1 - col);
            }
        };

        if(sz1){
            r.push_back(i);
            for(int j = sz1; j < sz2; ++j){
                flip(flip, way[i][j], i, 1);
            }
        }
        else{
            l.push_back(i);
        }
    }

    // if((int)l.size() != n || (int)r.size() != n) while(true){}

    auto del = [&](int x, int y)->void{
        for(int i = 0; i < (int)way[x].size(); ++i){
            if(way[x][i] == y){
                swap(way[x][i], way[x].back());
                way[x].pop_back();
                return;
            }
        }
        assert(0);
    };

    while(true){
        int ed = 1;
        for(int i = 1; i <= n * 2; ++i){
            if((int)way[i].size() < 3){
                continue;
            }

            ed = 0;
            assert((int)way[i].size() == 3);
            for(int j = 0; j < 3; ++j){
                vector<int> ask = {i};
                for(int x = 0; x < 3; ++x){
                    if(j != x){
                        ask.push_back(way[i][x]);
                    }
                }

                int rv = Query(ask);
                if(rv == 1){
                    // del(way[i][j], i);
                    del(i, way[i][j]);

                    break;
                }
            }

            assert((int)way[i].size() == 2);
        }

        if(ed) break;
    }

    for(int i = 1; i <= n * 2; ++i){
        for(int j = 0; j < (int)way[i].size(); ++j){
            int nxt = way[i][j];
            int fd = 0;
            for(auto&nnxt:way[nxt]){
                fd |= nnxt == i;
            }
            if(!fd){
                swap(way[i][j], way[i].back());
                way[i].pop_back();
            }
        }
    }

    vector<vector<int>> ans;
    while((int)ans.size() < n){
        for(int i = 1; i <= n * 2; ++i){
            if(chk[i] || (int)way[i].size() > 1) continue;

            assert((int)way[i].size() == 1);

            int nxt = way[i][0];
            chk[i] = chk[nxt] = 1;
            ans.push_back({i, nxt});

            for(auto&j:way[nxt]){
                del(j, nxt);
            }
            way[nxt].clear();
            way[i].clear();
        }
    }

    for(auto&i:ans){
        Answer(i[0], i[1]);
    }
}

Compilation message

chameleon.cpp: In lambda function:
chameleon.cpp:29:35: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   29 |                     int mid = low + high >> 1;
      |                               ~~~~^~~~~~
chameleon.cpp: At global scope:
chameleon.cpp:7:5: warning: '{anonymous}::variable_example' defined but not used [-Wunused-variable]
    7 | int variable_example = 1;
      |     ^~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 12 ms 464 KB Output is correct
4 Correct 12 ms 464 KB Output is correct
5 Correct 12 ms 464 KB Output is correct
6 Correct 13 ms 464 KB Output is correct
7 Correct 13 ms 464 KB Output is correct
8 Correct 16 ms 428 KB Output is correct
9 Correct 12 ms 424 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 0 ms 336 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Runtime error 1 ms 464 KB Execution killed with signal 11
10 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 0 ms 336 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Runtime error 1 ms 464 KB Execution killed with signal 11
10 Halted 0 ms 0 KB -

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 18 ms 448 KB Output is correct
4 Correct 20 ms 448 KB Output is correct
5 Correct 19 ms 420 KB Output is correct
6 Correct 23 ms 464 KB Output is correct
7 Correct 19 ms 464 KB Output is correct
8 Correct 18 ms 444 KB Output is correct
9 Correct 19 ms 464 KB Output is correct

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 12 ms 464 KB Output is correct
4 Correct 12 ms 464 KB Output is correct
5 Correct 12 ms 464 KB Output is correct
6 Correct 13 ms 464 KB Output is correct
7 Correct 13 ms 464 KB Output is correct
8 Correct 16 ms 428 KB Output is correct
9 Correct 12 ms 424 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 0 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 0 ms 336 KB Output is correct
14 Correct 0 ms 336 KB Output is correct
15 Correct 0 ms 336 KB Output is correct
16 Correct 0 ms 336 KB Output is correct
17 Correct 0 ms 336 KB Output is correct
18 Runtime error 1 ms 464 KB Execution killed with signal 11
19 Halted 0 ms 0 KB -