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답안 #469504

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
469504 2021-09-01T08:11:59 Z radal Party (INOI20_party) C++14
7 / 100
 685 ms 1188 KB 
#include <bits/stdc++.h>
#pragma GCC target ("avx,avx2,fma")
#pragma GCC optimize ("O2")
#pragma GCC optimize ("unroll-loops")
#define X first
#define Y second
#define debug(x) cerr << #x << ": " << x << endl;
#define endl '\n'
#define pb push_back
#define rep(i,l,r) for (int i=l; i<r; i++)
#define repr(i,r,l) for (int i=r; i>=l; i--)
using namespace std;
typedef long long ll;
typedef pair<int,int> pll;
const long long int N = 1e3+20,mod = 1e9+7,inf=1e9+1;
ll poww(int n,int k){
    if (!k) return 1;
    if (k == 1) return n;
    ll r = poww(n,k/2);
    return (r*r%mod)*poww(n,(k&1))%mod;
}
ll cnt[N][20],n,cn[N][20],pw[N];
map<pair<ll,int>,int> cnt1,cn1;
void dfs(int v){
    cnt[v][0] = 1;
    if (2*v <= n){
        dfs(2*v);
        rep(i,1,20) cnt[v][i] = cnt[2*v][i-1];
    }
    if (2*v+1 <= n){
        dfs(2*v+1);
        rep(i,1,20) cnt[v][i] += cnt[2*v+1][i-1];
    }
}
void dfs2(int v){
    if (2*v <= n){
        cn[2*v][1] = 1;
        rep(i,2,20) cn[2*v][i] = cn[v][i-1]+cnt[v][i-1]-cnt[2*v][i-2];
        dfs2(2*v);
    }
    if (2*v+1 <= n){
        cn[2*v+1][1] = 1;
        rep(i,2,20) cn[2*v+1][i] = cn[v][i-1]+cnt[v][i-1]-cnt[2*v+1][i-2];
        dfs2(2*v+1);
    }
}
inline int mkay(int a,int b){
    if (a+b < mod) return a+b;
    return a+b-mod;
}
int main(){
    ios :: sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int q;
    cin >> q;
    pw[0] = 1;
    rep(i,1,201)
        pw[i] = 2*pw[i-1]%mod;
    while (q--){
        cin >> n;
        if (__builtin_popcountll(n+1) == 1){
            cnt1.clear();
            cn1.clear();
            ll z = 0;
            for (ll i = (n+1)/2; i >= 1; i/=2){
                z++;
                cnt1[{i,0}] = 1;
                rep(j,1,z){
                    if (z > 1)
                        cnt1[{i,j}] = cnt1[{2*i,j-1}]*2%mod;
                }
            }
            for (ll i = 2; i < n; i <<= 1){
                cn1[{i,1}] = 1;
                rep(j,2,121)
                    cn1[{i,j}] = mkay(cn1[{i/2,j-1}],cnt1[{i,j-2}]);
            }
            ll ans = 0,y = poww(2,n%mod)-1;
            y = poww(y,mod-2);
            z = 1;
            for (ll i = 1; i < n; i *= 2){
                ll sm = 1;
                rep(j,1,121){
                    ll x = cnt1[{i,j}];
                    ll y = cn1[{i,j}];
                    sm += x+y;
                    ans = mkay(ans,j*(poww(2,mkay(y,x))-1)%mod*poww(2,(n-sm)%mod)%mod*z%mod);
                }
                z *= 2;
            }
            cout << ans*y%mod << endl;
            continue;
        }
        memset(cn,0,sizeof cn);
        memset(cnt,0,sizeof cnt);
        dfs(1);
        dfs2(1);
        ll ans = 0,y = (pw[n]-1);
        y = poww(y,mod-2);
        rep(i,1,n+1){
            int sm = 0;
            rep(j,0,20){
                sm += cnt[i][j]+cn[i][j];
                ans = mkay(ans,(1ll*j*(pw[cnt[i][j]+cn[i][j]]-1)%mod)*pw[n-sm]%mod);
            }
        }
        //cout << ans << endl;
        cout << 1ll*ans*y%mod << endl;
    }
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 716 KB Output is correct
2 Correct 6 ms 728 KB Output is correct
3 Correct 6 ms 716 KB Output is correct
4 Correct 8 ms 844 KB Output is correct
5 Correct 4 ms 632 KB Output is correct
6 Correct 4 ms 588 KB Output is correct
7 Correct 4 ms 636 KB Output is correct
8 Correct 4 ms 588 KB Output is correct
9 Correct 34 ms 408 KB Output is correct
10 Correct 36 ms 332 KB Output is correct
11 Correct 685 ms 428 KB Output is correct
12 Correct 627 ms 404 KB Output is correct
13 Correct 67 ms 640 KB Output is correct
14 Correct 66 ms 640 KB Output is correct
15 Correct 66 ms 640 KB Output is correct
16 Correct 78 ms 636 KB Output is correct
17 Correct 58 ms 588 KB Output is correct
18 Correct 58 ms 616 KB Output is correct
19 Correct 55 ms 664 KB Output is correct
20 Correct 55 ms 644 KB Output is correct

Subtask #2
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 541 ms 1188 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 2 ms 1100 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 37.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 716 KB Output is correct
2 Correct 6 ms 728 KB Output is correct
3 Correct 6 ms 716 KB Output is correct
4 Correct 8 ms 844 KB Output is correct
5 Correct 4 ms 632 KB Output is correct
6 Correct 4 ms 588 KB Output is correct
7 Correct 4 ms 636 KB Output is correct
8 Correct 4 ms 588 KB Output is correct
9 Correct 34 ms 408 KB Output is correct
10 Correct 36 ms 332 KB Output is correct
11 Correct 685 ms 428 KB Output is correct
12 Correct 627 ms 404 KB Output is correct
13 Correct 67 ms 640 KB Output is correct
14 Correct 66 ms 640 KB Output is correct
15 Correct 66 ms 640 KB Output is correct
16 Correct 78 ms 636 KB Output is correct
17 Correct 58 ms 588 KB Output is correct
18 Correct 58 ms 616 KB Output is correct
19 Correct 55 ms 664 KB Output is correct
20 Correct 55 ms 644 KB Output is correct
21 Incorrect 541 ms 1188 KB Output isn't correct
22 Halted 0 ms 0 KB -