Submission #1037963

#	Time	Username	Problem	Language	Result	Execution time	Memory
1037963		idas	Last supper (IOI12_supper)	C++11	0 / 100	54 ms	10108 KiB

advisor

#include <bits/stdc++.h>
#include "advisor.h"

#define FOR(i, begin, end) for(int i=(begin); i<(end); i++)
#define s second
#define f first

using namespace std;
typedef pair<int, int> pii;

const int MxN=1e5+10;
int n, k, c[MxN], nxt[MxN], cur[MxN], bits[2*MxN], id[MxN];

void ComputeAdvice(int *C, int N, int K, int M) {
    n=N; k=K; FOR(i, 0, n) c[i]=C[i], cur[i]=-1;
    for(int i=n-1; i>=0; i--){
        nxt[i+k]=cur[c[i]];
        cur[c[i]]=i;
    }
    FOR(i, 0, k) nxt[i]=cur[i], id[i]=i;

    set<pii, greater<pii>> st;
    FOR(i, 0, k) st.insert({nxt[i],i});

    FOR(i, 0, n)
    {
        auto it=st.begin();
        int in=(*it).s;
        st.erase(it);

        int col;
        if(in<k) col=in;
        else col=c[in-k];

        if(c[i]!=col) bits[in]=1;

        st.insert({nxt[i+k], i+k});
    }

    FOR(i, 0, n+k) WriteAdvice(bits[i]);
}

assistant

#include <bits/stdc++.h>
#include "assistant.h"

#define FOR(i, begin, end) for(int i=(begin); i<(end); i++)
#define pb push_back
#define s second
#define f first

using namespace std;
typedef vector<int> vi;

const int MxN=1e5+10;
int n, k, r, bits[MxN];

void Assist(unsigned char *A, int N, int K, int R) {
    n=N; k=K; r=R; FOR(i, 0, r) bits[i]=(A[i]=='1'?1:0);

    vi bad;
    set<int> cols;
    FOR(i, 0, k)
    {
        cols.insert(i);
        if(bits[i]) bad.pb(i);
    }

    FOR(i, k, n+k)
    {
        int next_col=GetRequest();
        if(!cols.count(next_col)){
            cols.erase(bad.back());
            PutBack(bad.back());
            bad.pop_back();

            cols.insert(next_col);
            if(bits[i]) bad.pb(next_col);
        }
    }
}

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