Submission #1061453
Source Code Expand
#include <algorithm> #include <cassert> #include <cfloat> #include <climits> #include <cmath> #include <cstdio> #include <cstdlib> #include <deque> #include <iomanip> #include <iostream> #include <limits> #include <map> #include <queue> #include <set> #include <sstream> #include <stack> #include <string> #include <tuple> #include <vector> #define FOR(i,k,n) for (int (i)=(k); (i)<(n); ++(i)) #define rep(i,n) FOR(i,0,n) #define pb push_back #define all(v) begin(v), end(v) #define debug(x) cerr<< #x <<": "<<x<<endl #define debug2(x,y) cerr<< #x <<": "<< x <<", "<< #y <<": "<< y <<endl using namespace std; typedef long long ll; typedef unsigned long long ull; typedef pair<int, int> pii; typedef vector<int> vi; typedef vector<vector<int> > vvi; typedef vector<ll> vll; typedef vector<vector<ll> > vvll; template<class T> using vv=vector<vector< T > >; ll mod = 1e9 + 7; ll po(ll k, ll x) { if (x == 0) { return 1; } if (x == 1) { return k % mod; } ll y = po(k, x/2); y = y * y % mod; if (x % 2 == 1) { y = y * k % mod; } return y; } ll po2(ll x) { return po(2, x); } ll po2_1(ll x) { ll ret = po2(x); ret = (ret + mod - 1) % mod; return ret; } int main() { int n; scanf("%d", &n); vi a(n); rep (i, n) { scanf("%d", &a[i]); } bool possible = true; if (a[0] != 0) { possible = false; } int maxi = 0; FOR (i, 1, n) { if (a[i] == 0) { possible = false; } maxi = max(maxi, a[i]); } vi gr(maxi+1, 0); rep (i, n) { gr[a[i]] += 1; } FOR (i, 1, maxi+1) { if (gr[i] == 0) { possible = false; } } if (!possible) { printf("0\n"); return 0; } ll ans = 1; FOR (i, 1, maxi+1) { ll connect = po2_1(gr[i-1]); connect = po(connect, gr[i]); ans = ans * connect % mod; ll comb = (ll)gr[i] * (gr[i]-1) / 2 % (mod - 1); ans = ans * po2(comb) % mod; } printf("%lld\n", ans); return 0; }
Submission Info
Submission Time | |
---|---|
Task | B - 最短路問題 |
User | tspcx |
Language | C++14 (Clang++ 3.4) |
Score | 100 |
Code Size | 2044 Byte |
Status | AC |
Exec Time | 36 ms |
Memory | 1572 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 100 / 100 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt |
All | sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt, test_01.txt, test_02.txt, test_03.txt, test_04.txt, test_05.txt, test_06.txt, test_07.txt, test_08.txt, test_09.txt, test_10.txt, test_11.txt, test_12.txt, test_13.txt, test_14.txt, test_15.txt, test_16.txt, test_17.txt, test_18.txt, test_19.txt, test_20.txt, test_21.txt, test_22.txt, test_23.txt, test_24.txt, test_25.txt, test_26.txt, test_27.txt, test_28.txt, test_29.txt, test_30.txt, test_31.txt, test_32.txt, test_33.txt, test_34.txt, test_35.txt, test_36.txt, test_37.txt, test_38.txt, test_39.txt, test_40.txt, test_41.txt, test_42.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
sample_01.txt | AC | 19 ms | 928 KB |
sample_02.txt | AC | 17 ms | 800 KB |
sample_03.txt | AC | 18 ms | 844 KB |
sample_04.txt | AC | 18 ms | 924 KB |
test_01.txt | AC | 17 ms | 924 KB |
test_02.txt | AC | 17 ms | 928 KB |
test_03.txt | AC | 16 ms | 928 KB |
test_04.txt | AC | 16 ms | 800 KB |
test_05.txt | AC | 18 ms | 928 KB |
test_06.txt | AC | 18 ms | 924 KB |
test_07.txt | AC | 16 ms | 800 KB |
test_08.txt | AC | 18 ms | 800 KB |
test_09.txt | AC | 16 ms | 920 KB |
test_10.txt | AC | 18 ms | 800 KB |
test_11.txt | AC | 26 ms | 1312 KB |
test_12.txt | AC | 24 ms | 1180 KB |
test_13.txt | AC | 24 ms | 1184 KB |
test_14.txt | AC | 24 ms | 1176 KB |
test_15.txt | AC | 25 ms | 1224 KB |
test_16.txt | AC | 26 ms | 1308 KB |
test_17.txt | AC | 23 ms | 1180 KB |
test_18.txt | AC | 24 ms | 1184 KB |
test_19.txt | AC | 25 ms | 1176 KB |
test_20.txt | AC | 25 ms | 1308 KB |
test_21.txt | AC | 26 ms | 1180 KB |
test_22.txt | AC | 27 ms | 1308 KB |
test_23.txt | AC | 25 ms | 1184 KB |
test_24.txt | AC | 28 ms | 1184 KB |
test_25.txt | AC | 32 ms | 1268 KB |
test_26.txt | AC | 34 ms | 1524 KB |
test_27.txt | AC | 36 ms | 1572 KB |
test_28.txt | AC | 33 ms | 1304 KB |
test_29.txt | AC | 29 ms | 1316 KB |
test_30.txt | AC | 25 ms | 1180 KB |
test_31.txt | AC | 18 ms | 844 KB |
test_32.txt | AC | 18 ms | 920 KB |
test_33.txt | AC | 18 ms | 928 KB |
test_34.txt | AC | 18 ms | 800 KB |
test_35.txt | AC | 17 ms | 788 KB |
test_36.txt | AC | 18 ms | 800 KB |
test_37.txt | AC | 18 ms | 800 KB |
test_38.txt | AC | 18 ms | 916 KB |
test_39.txt | AC | 18 ms | 920 KB |
test_40.txt | AC | 18 ms | 800 KB |
test_41.txt | AC | 18 ms | 928 KB |
test_42.txt | AC | 18 ms | 920 KB |