Submission #492511

#	Time^UTC-0	Username	Problem	Language	Result	Execution time	Memory
492511	2021-12-07 16:34:44	LittleCube	Star Trek (CEOI20_startrek)	C++14	Compilation error	0 ms	0 KiB

This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.

startrek

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#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define F first
#define S second
using namespace std;
const ll MOD = 1000000007;
ll N, D, dp[100005][2], pre[100005];
vector<int> E[100005];
void dfs(int k)
{
    for (int i : E[k])
        if (i != pre[k])
        {
            pre[i] = k;
            dfs(i);
            if (dp[i][0] == 0 && dp[k][0] == 0)
                dp[k][0] = i;
            else if (dp[i][0] == 0)
                dp[k][1] = i;
        }
}
void reroot(int k)
{
    for (int i : E[k])
 
 
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Compilation message (stderr)

startrek.cpp: In function 'int main()':
startrek.cpp:70:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   70 |                 ans = (ans * b) % MOD;
      |                 ^~~
      |                 abs
startrek.cpp:74:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   74 |         cout << ans << '\n';
      |                 ^~~
      |                 abs