#include <bits/stdc++.h>
#include "cmp.h"
#define owo(i,a, b) for(int i=(a);i<(b); ++i)
#define uwu(i,a, b) for(int i=(a)-1; i>=(b); --i)
#define senpai push_back
#define ttgl pair<int, int>
#define ayaya cout<<"ayaya~"<<endl
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
gp_hash_table<int, int> mp;
using ll = long long;
using ld = long double;
const ll MOD = 1000000007;
const ll root = 62;
int gcd(int a,int b){return b?gcd(b,a%b):a;}
ll binpow(ll a,ll b){ll res=1;while(b){if(b&1)res=(res*a)%MOD;a=(a*a)%MOD;b>>=1;}return res;}
ll modInv(ll a){return binpow(a, MOD-2);}
const double PI = acos(-1);
const double eps = -1e6;
const int INF = 0x3f3f3f3f;
const int NINF = 0xc0c0c0c0;
const ll INFLL = 0x3f3f3f3f3f3f3f3f;
const ll NINFLL = 0xc0c0c0c0c0c0c0c0;
//write a as power of 4, binary search down and compare at the end;
/*bool stuff[4097][10241];
int idx1 = 0;
int idx2 = 0;
int num;
void bit_set(int a) {
//cout<<a<<" set\n";
idx1++;
stuff[num][a] = true;
}
int bit_get(int a) {
//cout<<a<<" get\n";
idx2++;
return stuff[num][a];
}*/
int sz[7] = {1366, 342, 86, 22, 6, 2, 1};
void remember(int a) {
int curr = sz[0]+a;
owo(i, 1, 7) {
bit_set(curr);
int diff = (curr-sz[i])/4;
curr = sz[i+1]+diff;
}
}
int compare(int b) {
int pos[7];
int curr = sz[0]+b;
owo(i, 1, 8) {
pos[i-1] = curr;
if(i<7){
int diff = (curr-sz[i])/4;
curr = sz[i+1]+diff;
}
//cout<<(i-1)<<" "<<pos[i-1]<<"\n";
}
int l = 0;
int r = 6;
while(l<r) {
int mid = (l+r)/2;
if(mid==6||bit_get(pos[mid])) {
r = mid;
}
else l = mid+1;
}
if(l==0)return 0;
//cout<<l<<" "<<pos[l]<<"\n";
int add = (pos[l-1]-sz[l-1])/4;
int diff = (pos[l-1]-sz[l-1])%4;
//cout<<l<<" "<<pos[l]<<" "<<add<<" "<<diff<<"\n";
if(diff==0) {
return -1;
}else if(diff==3) {
return 1;
}else if(diff==1) {
if(bit_get(sz[l-1]+add*4))return 1;
else return -1;
}else {
if(bit_get(sz[l-1]+3+add*4))return -1;
else return 1;
}
}
/*int main() {
//freopen("file.in", "r", stdin);
//freopen("file.out", "w", stdout);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
cin.tie(0)->sync_with_stdio(0);
int n, m;
cin>>n>>m;
remember(n);
cout<<compare(m)<<"\n";
owo(i, 0, 4096) {
num = i;
remember(i);
owo(j, 0, 4096) {
int k =compare(j);
if((i==j&&k!=0)||(i>j&&k!=-1)||(i<j&&k!=1)) {
cout<<"BAD "<<i<<" "<<j<<" "<<k<<"\n";
}
}
}
return 0;
}
*/
Compilation message
cmp.cpp: In function 'void remember(int)':
cmp.cpp:47:22: warning: iteration 5 invokes undefined behavior [-Waggressive-loop-optimizations]
curr = sz[i+1]+diff;
~~~~~~^
cmp.cpp:3:36: note: within this loop
#define owo(i,a, b) for(int i=(a);i<(b); ++i)
^
cmp.cpp:44:5: note: in expansion of macro 'owo'
owo(i, 1, 7) {
^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2106 ms |
96248 KB |
Output is correct - maxAccess = 10, score = 100 |
