제출 #702077

#제출 시각아이디문제언어결과실행 시간메모리
702077PCTprobability친구 (IOI14_friend)C++17
100 / 100
24 ms6164 KiB
#include <bits/stdc++.h> #include "friend.h" using namespace std; using ll = long long; #define pb push_back vector<int> g[100000]; int dp[100000][2]; ll con[100000]; int findSample(int n, int confidence[], int host[], int protocol[]){ for(int i=0;i<n;i++) con[i]=confidence[i]; for(int i=0;i<n;i++) dp[i][1]=con[i]; for(int i=n-1;i>=1;i--){ dp[i][1]=max(dp[i][1],dp[i][0]); if(protocol[i]==0){ dp[host[i]][0]+=dp[i][1]; dp[host[i]][1]+=dp[i][0]; } if(protocol[i]==1){ dp[host[i]][0]+=dp[i][0]; dp[host[i]][1]+=dp[i][1]; } if(protocol[i]==2){ dp[host[i]][1]=max(dp[host[i]][0]+dp[i][1],dp[host[i]][1]+dp[i][0]); dp[host[i]][0]+=dp[i][0]; } dp[host[i]][1]=max(dp[host[i]][1],dp[host[i]][0]); } return max(dp[0][1],dp[0][0]); }
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