Submission #878857

#	Time	Username	Problem	Language	Result	Execution time	Memory
878857		8pete8	Xoractive (IZhO19_xoractive)	C++14	0 / 100	3 ms	600 KiB

Xoractive

#include "interactive.h"
#include <cstdio>
#include <cstdlib>
#include <cassert>
#include <vector>
#include <algorithm>
#include<iostream>
#include<stack>
#include<map>
#include<vector>
#include<string>
#include<unordered_map>
#include <queue>
#include<cstring>
#include<limits.h>
#include<cmath>
#include<set>
#include<algorithm>
#include<bitset>
using namespace std;
#define ll long long
#define f first
#define endl "\n"
#define s second
#define pii pair<int,int>
#define ppii pair<pii,pii>
#define vi vector<int>
#define pb push_back
//#define p push
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define F(n) for(int i=0;i<n;i++)
#define lb lower_bound
#define ub upper_bound
#define fastio ios::sync_with_stdio(false);cin.tie(NULL);
#pragma GCC optimize ("03,unroll-lopps")
using namespace std;
const int mod=9901,mxn=3*1e5+5;

vector<int> guess(int n){
    int g=ask(1);
    map<int,int>pos;
    for(int i=0;i<7;i++){
        vector<int>q;
        for(int j=2;j<=n;j++)if(j&(1<<i))q.pb(j);
        if(q.size()<=1){
            for(auto j:q)pos[ask(j)]+=(1<<i);
            continue;
        }
        vector<int>a1=get_pairwise_xor(q);
        q.pb(1);
        vector<int>a2=get_pairwise_xor(q);
        int cur=0;
        for(int j=0;j<a2.size();j++){
            if(cur<a1.size()&&a1[cur]==a2[j]){
                cur++;
                continue;
            }
            pos[a2[j]^g]+=(1<<i);
            j++;
        }
    }
    vector<int>ans(n);
    ans[0]=g;
    for(auto i:pos)ans[i.s-1]=i.f;
    return ans;
}

Compilation message (stderr)

Xoractive.cpp:36:40: warning: bad option '-funroll-lopps' to pragma 'optimize' [-Wpragmas]
   36 | #pragma GCC optimize ("03,unroll-lopps")
      |                                        ^
Xoractive.cpp:40:24: warning: bad option '-funroll-lopps' to attribute 'optimize' [-Wattributes]
   40 | vector<int> guess(int n){
      |                        ^
Xoractive.cpp: In function 'std::vector<int> guess(int)':
Xoractive.cpp:54:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |         for(int j=0;j<a2.size();j++){
      |                     ~^~~~~~~~~~
Xoractive.cpp:55:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |             if(cur<a1.size()&&a1[cur]==a2[j]){
      |                ~~~^~~~~~~~~~

• Subtask 1: 0 / 6
• Subtask 2: 0 / 94