Submission #1083543

#	Time	Username	Problem	Language	Result	Execution time	Memory
1083543		jay22	Friend (IOI14_friend)	C++14	Compilation error	0 ms	0 KiB

friend

#include <algorithm>

const int LEN = 1'000'001;
int w[LEN];

int findSample(int n, int confidence[], int host[], int protocol[]) {
    for (int i = 0; i < n; ++i) w[i] = confidence[i];
	for (int i = n - 1; i; --i) {
		if (protocol[i] == 0) {
			dp[host[i]][1] += dp[i][0];
			dp[host[i]][0] += std::max(dp[i][0], dp[i][1] + w[i]);
		}
		if (protocol[i] == 1) {
			dp[host[i]][0] += dp[i][0];
			dp[host[i]][1] += std::max(dp[i][0], dp[i][1] + w[i]);
		}
		if (protocol[i] == 2) {
			dp[host[i]][0] += dp[i][0];
			dp[host[i]][1] += std::max(dp[i][0], dp[i][1]);
            w[host[i]] = std::max(w[host[i]], w[i]);
		}
	}
    return std::max(dp[0][0], dp[0][1] + w[0]);
}

Compilation message (stderr)

friend.cpp: In function 'int findSample(int, int*, int*, int*)':
friend.cpp:10:4: error: 'dp' was not declared in this scope
   10 |    dp[host[i]][1] += dp[i][0];
      |    ^~
friend.cpp:14:4: error: 'dp' was not declared in this scope
   14 |    dp[host[i]][0] += dp[i][0];
      |    ^~
friend.cpp:18:4: error: 'dp' was not declared in this scope
   18 |    dp[host[i]][0] += dp[i][0];
      |    ^~
friend.cpp:23:21: error: 'dp' was not declared in this scope
   23 |     return std::max(dp[0][0], dp[0][1] + w[0]);
      |                     ^~