oj.uz

Submission #255720

# Submission time Handle Problem Language Result Execution time Memory
255720 2020-08-01T16:59:29 Z eohomegrownapps Last supper (IOI12_supper) C++14
53 / 100
 387 ms 144368 KB 
#include "advisor.h"
#include <bits/stdc++.h>
using namespace std;
#include <bits/extc++.h>
using namespace __gnu_pbds;

template <typename T>
using pbds_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template <typename T, typename V>
using pbds_map = tree<T, V, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

void ComputeAdvice(int *c, int n, int k, int m) {
    vector<queue<int>> nextocc(n);
    for (int i = 0; i<n; i++){
        nextocc[c[i]].push(i);
    }
    int bitwidth = ceil(log2(k));
    set<pair<int,int>> scaffrem;
    pbds_set<int> scaff;
    for (int i = 0; i<k; i++){
        if (nextocc[i].size()>0){
            scaffrem.insert({nextocc[i].front(),i});
        } else {
            scaffrem.insert({n,i});
        }
        scaff.insert(i);
    }
    for (int i = 0; i<n; i++){
        //cout<<i<<'\n';
        if (scaff.find(c[i])!=scaff.end()){
            scaffrem.erase({nextocc[c[i]].front(),c[i]});
        } else {
            //check if the one we just put on can be removed
            auto toremove = prev(scaffrem.end());
            int ind;
            if (i>0&&nextocc[c[i-1]].size()==0&&c[i]!=c[i-1]){
                //cout<<"remove\n";
                WriteAdvice(1);
                toremove = scaffrem.find({n,c[i-1]});
                ind = scaff.order_of_key(toremove->second);
            } else {
                //cout<<"take\n";
                //can we get rid of one we've already used
                /*auto it = scaffrem.lower_bound({i,-1});
                if (it!=scaffrem.begin()){
                    toremove = prev(it);
                }*/
                //transmit ind
                ind = scaff.order_of_key(toremove->second);
                if (toremove->second==c[i-1]){
                    WriteAdvice(1);
                } else {
                    WriteAdvice(0);
                    for (int i = bitwidth-1; i>=0; i--){
                        WriteAdvice(bool((1<<i)&ind));
                    }
                }
            }
            scaffrem.erase(toremove);
            scaff.erase(scaff.find_by_order(ind));
            scaff.insert(c[i]);
        }
        int newind = n;
        nextocc[c[i]].pop();
        if (nextocc[c[i]].size()>0){
            newind=nextocc[c[i]].front();
        }
        scaffrem.insert({newind,c[i]});
    }
}

#include "assistant.h"
#include <bits/stdc++.h>
using namespace std;
#include <bits/extc++.h>
using namespace __gnu_pbds;

template <typename T>
using pbds_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template <typename T, typename V>
using pbds_map = tree<T, V, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

void Assist(unsigned char *A, int n, int k, int r) {
    //GetRequest()
    //PutBack()
    int ptr = 0;
    int bitwidth = ceil(log2(k));
    pbds_set<int> scaff;
    for (int i = 0; i<k; i++){
        scaff.insert(i);
    }
    int prevcol = -1;
    for (int i = 0; i<n; i++){
        int col = GetRequest();
        if (scaff.find(col)!=scaff.end()){
            prevcol=col;
            continue;
        } else {
            int removeLast = A[ptr];
            //cout<<ptr<<" "<<int(A[ptr])<<'\n';
            ptr++;
            auto putel = scaff.begin();
            if (removeLast){
                putel = scaff.find(prevcol);
            } else {
                int ind = 0;
                for (int i = 0; i<bitwidth; i++){
                    ind*=2;
                    ind+=A[ptr];
                    ptr++;
                }
                //cout<<ind<<'\n';
                putel = scaff.find_by_order(ind);
            }
            //cout<<"put back "<<*putel<<'\n';
            PutBack(*putel);
            scaff.erase(putel);
            scaff.insert(col);
        }
        prevcol=col;
    }
}

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 780 KB Output is correct
2 Correct 1 ms 968 KB Output is correct
3 Correct 3 ms 2048 KB Output is correct
4 Correct 6 ms 4608 KB Output is correct
5 Incorrect 6 ms 7424 KB Error - Not putting back color when it is not on the scaffold
6 Halted 0 ms 0 KB -

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 14592 KB Output is correct
2 Correct 135 ms 70440 KB Output is correct
3 Correct 348 ms 144368 KB Output is correct
4 Correct 185 ms 137568 KB Output is correct
5 Correct 242 ms 137880 KB Output is correct
6 Correct 300 ms 138992 KB Output is correct
7 Correct 336 ms 141560 KB Output is correct
8 Correct 271 ms 121328 KB Output is correct
9 Correct 160 ms 135152 KB Output is correct
10 Correct 350 ms 143600 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 270 ms 114680 KB Output is correct
2 Correct 338 ms 142320 KB Output is correct
3 Correct 364 ms 142576 KB Output is correct
4 Correct 387 ms 142576 KB Output is correct
5 Correct 326 ms 140272 KB Output is correct
6 Correct 336 ms 142832 KB Output is correct
7 Correct 354 ms 142560 KB Output is correct
8 Correct 312 ms 142064 KB Output is correct
9 Correct 289 ms 142576 KB Output is correct
10 Correct 343 ms 142576 KB Output is correct

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 6400 KB Output is correct
2 Correct 11 ms 7680 KB Output is correct
3 Correct 11 ms 7424 KB Output is correct
4 Correct 9 ms 7424 KB Output is correct
5 Incorrect 5 ms 7424 KB Error - advice is too long
6 Halted 0 ms 0 KB -

Subtask #5
35.0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 343 ms 141808 KB Output is partially correct - 368591 bits used
2 Correct 346 ms 142320 KB Output is partially correct - 359913 bits used
3 Correct 347 ms 142576 KB Output is partially correct - 344933 bits used
4 Correct 347 ms 142576 KB Output is partially correct - 344437 bits used
5 Correct 370 ms 142576 KB Output is partially correct - 344434 bits used
6 Correct 374 ms 142576 KB Output is partially correct - 344552 bits used
7 Correct 374 ms 142320 KB Output is partially correct - 344586 bits used
8 Correct 337 ms 142832 KB Output is partially correct - 344286 bits used
9 Correct 356 ms 142576 KB Output is partially correct - 343832 bits used
10 Correct 310 ms 142320 KB Output is correct - 82503 bits used