제출 #1069264

#제출 시각아이디문제언어결과실행 시간메모리
1069264NeroZein친구 (IOI14_friend)C++17
27 / 100
18 ms4156 KiB
#include "friend.h" #include<bits/stdc++.h> using namespace std; int dp[100009][2][2]; int findSample(int n,int confidence[],int host[],int protocol[]){ for(int i=n-1;i>=0;i--) { //dp[i][1][0] += confidence[i]; //dp[i][1][1] += confidence[i]; if(i==0)break; int par=host[i]; if(protocol[i]==0) { dp[par][0][1] += dp[i][0][1];//ok dp[par][0][0] += max(dp[i][1][1] + confidence[i], dp[i][0][1]);//ok dp[par][1][0] += dp[i][0][0];//ok dp[par][1][1] += dp[i][0][0];//ok } if(protocol[i]==1) { dp[par][0][1] = max(max(dp[par][1][1], dp[par][0][1]) + dp[i][1][1] + confidence[i], dp[par][0][1] + dp[i][0][0]);//ok dp[par][0][0] = max(dp[par][1][0] + dp[i][0][1], dp[par][0][0] + dp[i][0][0]);//ok dp[par][1][1] = max(dp[par][1][1] + dp[i][0][1], dp[par][1][1] + dp[i][1][1] + confidence[i]);//ok dp[par][1][0] += dp[i][0][1];//ok } if(protocol[i]==2) { dp[par][0][0] += dp[i][0][1]; dp[par][0][1] += max(dp[i][1][1],dp[i][0][1]); dp[par][1][0] += dp[i][0][0]; dp[par][1][1] += max(dp[i][0][1],dp[i][1][1]); } dp[par][0][1] = max(dp[par][0][1], dp[par][0][0]); dp[par][1][1] = max(dp[par][1][1], dp[par][1][0]); //cerr << i << ' ' << dp[0][0][0] << ' ' << dp[0][0][1] << ' ' << dp[0][1][0] << ' ' << dp[0][1][1] << '\n'; } return max(dp[0][0][1], dp[0][1][1] + confidence[0]); }
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