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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#770520 | #9597. Grade 2 | yeah14 | WA | 0ms | 34876kb | C++17 | 2.8kb | 2024-11-21 22:11:39 | 2024-11-21 22:11:40 |
Judging History
answer
#include <bits/stdc++.h>
#include <iostream>
using namespace std;
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
typedef pair<int, int> PII;
typedef pair<ll, ll> PLL;
#define i128 _int128
#define fi first
#define se second
#define pb push_back
#define endl '\n'
#define int long long
const ll INF = 0x3f3f3f3f;
const int N = 4e6 + 9, M = 1e9 + 9;
const ll mod = 998244353;
int read()
{
int s = 0, w = 1;
char c = getchar();
while (!isdigit(c))
(c == '-') ? w = -1 : w = 1, c = getchar();
while (isdigit(c))
s = (s << 1) + (s << 3) + (c ^ 48), c = getchar();
return s * w;
}
int qpow(int a, int b)
{
a %= mod;
int res = 1;
while (b)
{
if (b & 1)
{
res = (res * a) % mod;
}
a = (a * a) % mod;
b >>= 1;
}
return res % mod;
}
int gcd(int a, int b)
{
if (b == 0)
return a;
else
return gcd(b, a % b);
}
// int inverse(int a){
// a%=mod;
// return qpow(fac[a%mod],mod-2)%mod;
// }
// int C(int n,int r){
// n%=mod,r%=mod;
// if(r>n)return 0;
// return ((fac[n%mod]*inverse(r))%mod*inverse(n-r))%mod;
// }
// int Lucas(int n,int r){
// if(r==0)return 1;
// return C(n%mod,r%mod)%mod*Lucas(n/mod,r/mod)%mod;
// }
int x, n, mini_sum, l, r, ans;
map<int, int> res;
int prefix[N];
void solve()
{
cin >> x >> n;
int p = 1;
ans = 0;
memset(prefix, 0, sizeof(prefix));
while (p < x)
p *= 2;
int fid = 0, lid = 0;
for (int i = 1; i <= p; ++i)
{
if (gcd(((i * x) ^ x), x) == 1)
{
// cout<<i<<endl;
res[i] = 1;
mini_sum++;
if (fid == 0)
fid = i;
lid = i;
}
prefix[i] = prefix[i - 1] + res[i];
}
// for(int i=1;i<=p;++i){
// cout<<i<<'-'<<prefix[i]<<endl;
// }
// cout<<fid<<' '<<lid<<endl;
while (n--)
{
cin >> l >> r;
if (!x & 1)
ans = 0;
else
{
ans = prefix[r % p] - prefix[l % p - 1] + mini_sum * ((r - l) / p);
// if(r%p!=lid)r=r-r%p;
// if(l%p!=fid)l+=p-l%p;
// caseout<<l<<' '<<r;
// if(l<r)ans+=mini_sum;
if (l - l % p + p <= r%p)ans += mini_sum;
else if (ans < 0)ans += mini_sum;
cout << ans << endl;
}
}
}
signed main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int _ = 1;
// fac[0]=1;
// for(int i=1;i<=N-9;++i)fac[i]=(fac[i-1]*i)%mod;
// cin>>_;
while (_--)
solve();
return 0;
}
/*
255255 10
165055 339075075373
*/
Details
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Test #1:
score: 0
Wrong Answer
time: 0ms
memory: 34876kb
input:
15 2 1 4 11 4514
output:
2 2244
result:
wrong answer 2nd lines differ - expected: '2252', found: '2244'