oj.uz

Submission #707788

# Submission time Handle Problem Language Result Execution time Memory
707788 2023-03-10T06:44:28 Z victor_gao Minerals (JOI19_minerals) C++17
0 / 100
 1 ms 464 KB 
#include"minerals.h"
#include<bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
vector<int>arr;
bool alive[100015];
const int C=20;
int n;
void brute(vector<int>arr1,vector<int>arr2,bool stay){
    stay^=1;
    shuffle(arr1.begin(),arr1.end(),rng);
    shuffle(arr2.begin(),arr2.end(),rng);
    bool vis[30]={0};
    for (int i=0;i<30;i++)
        vis[i]=0;
    for (auto i:arr2){
        int last=Query(i);
        for (auto j:arr1){
            if (vis[j]) continue;
            alive[j]^=1;
            int now=Query(j);
            if (stay==1){
                if (now==last){
                    Answer(i,j);
                    vis[j]=1;
                    break;
                }
            }
            else {
                if (now!=last){
                    Answer(i,j);
                    vis[j]=1;
                    break;
                }
            }
        }
    }
}
void Merge(int l,int r,vector<int>have,bool stay1,bool stay2){
    if (r-l+1<=C){
        vector<int>now;
        for (int i=l-1;i<r;i++)
            now.push_back(arr[i]);
        brute(now,have,stay2);
        return;
    }
    int mid=(l+r)>>1,last;
    vector<int>L,R;
    if (!stay1){
        for (int i=l-1;i<mid;i++){
            last=Query(arr[i]);
            alive[arr[i]]^=1;
        }
    }
    else {
        for (int i=mid;i<r;i++){
            last=Query(arr[i]);
            alive[arr[i]]^=1;
        }
    }
    for (auto i:have){
        int now=Query(i);
        alive[i]^=1;
        bool ty=(now==last);
        if (ty)
            L.push_back(i);
        else R.push_back(i);
        last=now;
    }
    Merge(mid+1,r,R,0,stay2^1);
    Merge(l,mid,L,1,stay2^1);
}
void Solve(int N){
    n=N;
    vector<int>qry;
    int last=-1;
    for (int i=1;i<=2*N;i++){
        int now=Query(i);
        if (now==last){
            qry.push_back(i);
        }
        else {
            arr.push_back(i);
            last=now;
        }
        alive[i]=1;
    }
    //for (auto i:arr) cout<<i<<" ";
    //cout<<'\n';
    //for (auto i:qry) cout<<i<<" ";
    //cout<<'\n';
    Merge(1,N,qry,1,1);
}
/*
g++ -std=gnu++14 -O2 -o grader grader.cpp minerals.cpp
./grader.exe
4
1 5
2 6
3 4
7 8
*/

Compilation message

minerals.cpp: In function 'void Merge(int, int, std::vector<int>, bool, bool)':
minerals.cpp:65:9: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized]
   65 |         if (ty)
      |         ^~

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Runtime error 1 ms 464 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 464 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Runtime error 1 ms 464 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Runtime error 1 ms 464 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Runtime error 1 ms 464 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Runtime error 1 ms 464 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Runtime error 1 ms 464 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Runtime error 1 ms 464 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Runtime error 1 ms 464 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -