Submission #1168469

#	Time	Username	Problem	Language	Result	Execution time	Memory
1168469		jj_master	Catfish Farm (IOI22_fish)	C++20	Compilation error	0 ms	0 KiB

fish

#include <bits/stdc++.h>
using namespace std;

#define int int64_t
#define pb push_back
#define eb emplace_back
#define fi first
#define se second
#define ins insert

int max_weights(int N, int M, vector<int> &X, vector<int> &Y, vector<int> &W)
{
	map<int, vector<pair<int, int>>> catfish_in_coloumn;
	for(int i = 0; i < M; i++) {
		catfish_in_coloumn[X[i]].pb({Y[i], W[i]});
	}
	for(auto &entry : catfish_in_coloumn) {
		sort(entry.se.begin(), entry.se.end());
	}
	vector<int> dp(N, 0);
	for(int col = 0; col < N; col++) {
		if(col > 0) {
			dp[col] = dp[col - 1];
		}
		int catfish_caught = 0;
		for(auto &fish : catfish_in_coloumn[col]) {
			int row = fish.fi;
			int weight = fish.se;
			bool can_be_caught = false;
			if(col > 0) {
				bool caught_from_left = true;
				for(auto &left_fish : catfish_in_coloumn[col - 1]) {
					if(left_fish.fi == row) {
						caught_from_left = false;
						break;
					}
				}
				if(caught_from_left) can_be_caught = true;
			}
			if(col < N - 1) {
				bool caught_from_right = true;
				for(auto &right_fish : catfish_in_coloumn[col + 1]) {
					if(right_fish.fi == row) {
						caught_from_right = false;
						break;
					}
				}
				if(caught_from_right) can_be_caught = true;
			}
			if(can_be_caught) {
				catfish_caught += weight;
			}
		}
		if(col > 0) {
			dp[col] = max(dp[col], dp[col - 1] + catfish_caught);
		} else {
			dp[col] = max(dp[col], catfish_caught);
		}
	}
	return dp[N - 1];
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccJObpMX.o: in function `main':
grader.cpp:(.text.startup+0x267): undefined reference to `max_weights(int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status