Submission #409750

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
409750	2021-05-21 12:57:08	shahriarkhan	The Xana coup (BOI21_xanadu)	C++14	100 / 100	100 ms	21568 KiB

xanadu

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#include<bits/stdc++.h>
using namespace std ;
const int INF = 1e9 , mx = 1e5 + 5 ;
vector<int> adj[mx] ;
long long dp[mx][2][2] ;
int col[mx] ;
void calc(int s , int p)
{
    long long add1 = INF , add2 = INF , cnt1 = 0 , cnt2 = 0 , tot1 = 0 , tot2 = 0 ;
    for(int t : adj[s])
    {
        if(t==p) continue ;
        calc(t,s) ;
        if(dp[t][0][1]<dp[t][0][0])
        {
            ++cnt1 ;
            tot1 += dp[t][0][1] ;
            add1 = min(add1,dp[t][0][0] - dp[t][0][1]) ;
        }
        else
        {
            tot1 += dp[t][0][0] ;
            add1 = min(add1,dp[t][0][1] - dp[t][0][0]) ;
        }
        if(dp[t][1][1]<dp[t][1][0])
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

xanadu.cpp: In function 'int main()':
xanadu.cpp:66:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |     scanf("%d",&n) ;
      |     ~~~~~^~~~~~~~~
xanadu.cpp:70:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |         scanf("%d%d",&a,&b) ;
      |         ~~~~~^~~~~~~~~~~~~~
xanadu.cpp:74:40: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   74 |     for(int i = 1 ; i <= n ; ++i) scanf("%d",&col[i]) ;
      |                                   ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 10 / 10
• Subtask 4: 40 / 40
• Subtask 5: 30 / 30