Submission #361943

#	Time	Username	Problem	Language	Result	Execution time	Memory
361943		benedict0724	Last supper (IOI12_supper)	C++17	20 / 100	490 ms	83408 KiB

advisor

#include "advisor.h"
#include <queue>
using namespace std;
const int INF = 1000000000;

queue<int> useWhen[100000];
queue<int> ret;
priority_queue<pair<int, int>> pq;
int shelf[100000], loc[100000]; bool include[100000];
void ComputeAdvice(int *C, int N, int K, int M) {
    int logN = 0;
    while(N + 1 >= (1<<logN)) logN++;

    for(int i=0;i<N;i++) useWhen[C[i]].push(i);
    for(int i=0;i<K;i++) {
        shelf[i] = i; include[i] = true; loc[i] = i;
        if(useWhen[i].empty()) pq.push({INF, i});
        else pq.push({useWhen[i].front(), i});
    }

    for(int i=0;i<N;i++){
        if(!include[C[i]]){
            int m = pq.top().second; pq.pop();

            include[shelf[m]] = false;
            include[C[i]] = true;
            ret.push(shelf[m]);
            shelf[m] = C[i];
            useWhen[C[i]].pop();
            loc[C[i]] = m;
            if(useWhen[C[i]].empty()) pq.push({INF, m});
            else pq.push({useWhen[C[i]].front(), m});
        }
        else{
            ret.push((1<<logN) - 1);
            useWhen[C[i]].pop();
            if(useWhen[C[i]].empty()) pq.push({INF, loc[C[i]]});
            else pq.push({useWhen[C[i]].front(), loc[C[i]]});
        }
    }

    while(!ret.empty()){
        int now = ret.front(); ret.pop();
        for(int i=logN-1;i>=0;i--){
            if((1<<i) & now) WriteAdvice(1);
            else WriteAdvice(0);
        }
    }
}

assistant

#include "assistant.h"

void Assist(unsigned char *A, int N, int K, int R) {
    int i, logN = 0;
    while(N + 1 >= (1<<logN)) logN++;
    for (i = 0; i < N; i++) {
        int req = GetRequest();
        int ans = 0;
        for(int j = 0;j<logN;j++){
            ans *= 2;
            ans += A[i*logN + j];
        }

        if(ans != (1<<logN) - 1) PutBack(ans);
    }
}

Compilation message (stderr)

assistant.cpp: In function 'void Assist(unsigned char*, int, int, int)':
assistant.cpp:8:13: warning: unused variable 'req' [-Wunused-variable]
    8 |         int req = GetRequest();
      |             ^~~

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 0 / 9
• Subtask 4: 0 / 35
• Subtask 5: 3 / 39