| Task: | Pyramidi |
| Sender: | Lieska |
| Submission time: | 2020-11-27 18:34:34 +0200 |
| Language: | C++ (C++11) |
| Status: | READY |
| Result: | 0 |
| group | verdict | score |
|---|---|---|
| #1 | WRONG ANSWER | 0 |
| #2 | WRONG ANSWER | 0 |
| test | verdict | time | group | |
|---|---|---|---|---|
| #1 | ACCEPTED | 0.19 s | 1, 2 | details |
| #2 | ACCEPTED | 0.19 s | 1, 2 | details |
| #3 | ACCEPTED | 0.19 s | 1, 2 | details |
| #4 | ACCEPTED | 0.19 s | 1, 2 | details |
| #5 | ACCEPTED | 0.19 s | 1, 2 | details |
| #6 | ACCEPTED | 0.19 s | 1, 2 | details |
| #7 | ACCEPTED | 0.19 s | 1, 2 | details |
| #8 | ACCEPTED | 0.19 s | 1, 2 | details |
| #9 | ACCEPTED | 0.19 s | 1, 2 | details |
| #10 | ACCEPTED | 0.19 s | 1, 2 | details |
| #11 | WRONG ANSWER | 0.19 s | 1, 2 | details |
| #12 | WRONG ANSWER | 0.19 s | 1, 2 | details |
| #13 | WRONG ANSWER | 0.19 s | 1, 2 | details |
| #14 | WRONG ANSWER | 0.19 s | 1, 2 | details |
| #15 | WRONG ANSWER | 0.19 s | 1, 2 | details |
| #16 | WRONG ANSWER | 0.28 s | 2 | details |
| #17 | WRONG ANSWER | 0.28 s | 2 | details |
| #18 | WRONG ANSWER | 0.28 s | 2 | details |
| #19 | WRONG ANSWER | 0.28 s | 2 | details |
| #20 | WRONG ANSWER | 0.28 s | 2 | details |
Code
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll M=1e9+7, kertoma[202020], rkertoma[202020];
ll pot(ll a, ll b){
if (b==0) return 1;
ll l=pot(a, b/2);
l=(l*l)%M;
if (b%2==1) l=(l*a)%M;
return l;
}
int main(){
kertoma[0]=1;
rkertoma[0]=1;
for (ll i=1; i<=200000; ++i){
kertoma[i]=(kertoma[i-1]*i)%M;
rkertoma[i]=(rkertoma[i-1]*pot(i, M-2))%M;
}
ll n;
cin >> n;
ll ans=0;
for (int i=0; i<n; ++i){
ll a;
cin >> a;
ll b=(kertoma[n-1]*rkertoma[i])%M;
b=(b*rkertoma[n-i-1])%M;
if (b%2==1) {
ans = ans^a;
}
}
cout << ans << "\n";
}Test details
Test 1
Group: 1, 2
Verdict: ACCEPTED
| input |
|---|
| 1 80 |
| correct output |
|---|
| 80 |
| user output |
|---|
| 80 |
Test 2
Group: 1, 2
Verdict: ACCEPTED
| input |
|---|
| 2 69 91 |
| correct output |
|---|
| 30 |
| user output |
|---|
| 30 |
Test 3
Group: 1, 2
Verdict: ACCEPTED
| input |
|---|
| 3 47 74 75 |
| correct output |
|---|
| 100 |
| user output |
|---|
| 100 |
Test 4
Group: 1, 2
Verdict: ACCEPTED
| input |
|---|
| 4 94 22 100 43 |
| correct output |
|---|
| 7 |
| user output |
|---|
| 7 |
Test 5
Group: 1, 2
Verdict: ACCEPTED
| input |
|---|
| 5 50 82 47 40 51 |
| correct output |
|---|
| 1 |
| user output |
|---|
| 1 |
Test 6
Group: 1, 2
Verdict: ACCEPTED
| input |
|---|
| 6 90 27 98 85 47 14 |
| correct output |
|---|
| 96 |
| user output |
|---|
| 96 |
Test 7
Group: 1, 2
Verdict: ACCEPTED
| input |
|---|
| 7 55 82 52 9 65 90 86 |
| correct output |
|---|
| 20 |
| user output |
|---|
| 20 |
Test 8
Group: 1, 2
Verdict: ACCEPTED
| input |
|---|
| 8 45 52 52 95 40 85 3 46 |
| correct output |
|---|
| 34 |
| user output |
|---|
| 34 |
Test 9
Group: 1, 2
Verdict: ACCEPTED
| input |
|---|
| 9 77 16 59 32 22 41 87 89 78 |
| correct output |
|---|
| 3 |
| user output |
|---|
| 3 |
Test 10
Group: 1, 2
Verdict: ACCEPTED
| input |
|---|
| 10 59 78 34 26 71 9 82 68 80 74 |
| correct output |
|---|
| 111 |
| user output |
|---|
| 111 |
Test 11
Group: 1, 2
Verdict: WRONG ANSWER
| input |
|---|
| 100 100 6 10 53 84 80 7 87 3 82 26... |
| correct output |
|---|
| 91 |
| user output |
|---|
| 3 |
Test 12
Group: 1, 2
Verdict: WRONG ANSWER
| input |
|---|
| 100 25 18 62 51 79 55 71 33 21 29 ... |
| correct output |
|---|
| 58 |
| user output |
|---|
| 86 |
Test 13
Group: 1, 2
Verdict: WRONG ANSWER
| input |
|---|
| 100 3 20 19 60 11 84 94 79 63 59 9... |
| correct output |
|---|
| 124 |
| user output |
|---|
| 30 |
Test 14
Group: 1, 2
Verdict: WRONG ANSWER
| input |
|---|
| 100 99 86 42 2 97 78 8 12 98 7 98 ... |
| correct output |
|---|
| 49 |
| user output |
|---|
| 101 |
Test 15
Group: 1, 2
Verdict: WRONG ANSWER
| input |
|---|
| 100 19 19 14 30 80 53 21 18 26 85 ... |
| correct output |
|---|
| 42 |
| user output |
|---|
| 123 |
Test 16
Group: 2
Verdict: WRONG ANSWER
| input |
|---|
| 200000 852837035 608724072 368935143 ... |
| correct output |
|---|
| 680579671 |
| user output |
|---|
| 803629049 |
Test 17
Group: 2
Verdict: WRONG ANSWER
| input |
|---|
| 200000 255817977 550740070 115276527 ... |
| correct output |
|---|
| 177586289 |
| user output |
|---|
| 530664195 |
Test 18
Group: 2
Verdict: WRONG ANSWER
| input |
|---|
| 200000 30889540 9467827 526159961 367... |
| correct output |
|---|
| 439343644 |
| user output |
|---|
| 992933759 |
Test 19
Group: 2
Verdict: WRONG ANSWER
| input |
|---|
| 200000 421000302 598694653 199802169 ... |
| correct output |
|---|
| 184880259 |
| user output |
|---|
| 536422091 |
Test 20
Group: 2
Verdict: WRONG ANSWER
| input |
|---|
| 200000 578873143 289492857 855880936 ... |
| correct output |
|---|
| 937457144 |
| user output |
|---|
| 558157435 |