Submission #62130487

Source Code Expand

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#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
//#pragma GCC optimize("O3") // optimization
//#pragma GCC optimize("Ofast") // optimization
//#pragma GCC optimize("unroll-loops") // optimization
#define ordered_set tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update>
#define ordered_multiset tree<int,null_type,less_equal<int>,rb_tree_tag,tree_order_statistics_node_update>
using namespace std;
#define i32 signed
#define int long long // CP
#define i64 long long
#define endl '\n'
#define elif else if
#define fi first
#define se second
#define pb push_back
#define p32 pair<i32,i32>
#define p64 pair<i64,i64>
#define f2(i,x) for((i)=0;(i)<(x);(i)++)
#define f2b(i,x) for((i)=(x)-1;(i)>=0;(i)--)
 
 
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#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
//#pragma GCC optimize("O3") // optimization
//#pragma GCC optimize("Ofast") // optimization
//#pragma GCC optimize("unroll-loops") // optimization
#define ordered_set tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update>
#define ordered_multiset tree<int,null_type,less_equal<int>,rb_tree_tag,tree_order_statistics_node_update>
using namespace std;
#define i32 signed
#define int long long // CP
#define i64 long long
#define endl '\n'
#define elif else if
#define fi first
#define se second
#define pb push_back
#define p32 pair<i32,i32>
#define p64 pair<i64,i64>
#define f2(i,x) for((i)=0;(i)<(x);(i)++)
#define f2b(i,x) for((i)=(x)-1;(i)>=0;(i)--)
#define f3(i,f,t) for((i)=(f);(i)<(t);(i)++)
#define fall(x) (x).begin(), (x).end()
#define sort1(x) sort(fall(x))
#define rev(x) reverse(fall(x))
#define fast ios::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define fl fflush(stdout)
#define nl cout<<endl;fflush(stdout)
i64 gcd(i64 a, i64 b){if(a<b){a=a^b;b=a^b;a=a^b;} return b==0?a:gcd(b,a%b);}
i64 lcm(i64 a, i64 b){return a/gcd(a,b)*b;}
i64 expm(i64 a, i64 b, i64 m){i64 r=1;while(b){if(b&1)r=r*a%m;a=a*a%m;b>>=1;}return r%m;}
i64 expm(i64 a, i64 b){i64 r=1,m=1e9+7;while(b){if(b&1)r=r*a%m;a=a*a%m;b>>=1;}return r%m;}
i64 minv(i64 a, i64 m){return expm(a,m-2,m);}
i64 ncrm(i64 n, i64 r, i64 m){i64 i,j,k; i64 out=1; f3(i,1,n+1){out*=i;out%=m;}f3(i,1,r+1){out*=minv(i,m);out%=m;}f3(i,1,n-r+1){out*=minv(i,m);out%=m;}return out%m;}
int n,m,k,a[1000010],b[1000010],c[301010];
void f(){
    int i,j,l; cin>>n>>k; --k;
    int sz=0,t=n; while(t){t/=2;sz++;}
    int cnt=0; vector<int>v; f2(i,sz)if((n&(1<<i))==0){cnt++;v.pb(i);}
    if(k>=(1<<cnt)){cout<<-1<<endl;return;}
    f2(i,cnt)if(k&(1<<i))n^=(1<<v[i]);
    cout<<n<<endl;
}
i32 main(){
    fast;
    int tc; cin>>tc;
    while(tc--)f();
    // f();
    return 0;
}

Submission Info

Compile Error

Main.cpp: In function ‘long long int ncrm(long long int, long long int, long long int)’:
Main.cpp:34:37: warning: unused variable ‘j’ [-Wunused-variable]
   34 | i64 ncrm(i64 n, i64 r, i64 m){i64 i,j,k; i64 out=1; f3(i,1,n+1){out*=i;out%=m;}f3(i,1,r+1){out*=minv(i,m);out%=m;}f3(i,1,n-r+1){out*=minv(i,m);out%=m;}return out%m;}
      |                                     ^
Main.cpp:34:39: warning: unused variable ‘k’ [-Wunused-variable]
   34 | i64 ncrm(i64 n, i64 r, i64 m){i64 i,j,k; i64 out=1; f3(i,1,n+1){out*=i;out%=m;}f3(i,1,r+1){out*=minv(i,m);out%=m;}f3(i,1,n-r+1){out*=minv(i,m);out%=m;}return out%m;}
      |                                       ^
Main.cpp: In function ‘void f()’:
Main.cpp:37:11: warning: unused variable ‘j’ [-Wunused-variable]
   37 |     int i,j,l; cin>>n>>k; --k;
      |           ^
Main.cpp:37:13: warning: unused variable ‘l’ [-Wunused-variable]
   37 |     int i,j,l; cin>>n>>k; --k;
      |             ^

Judge Result