Submission #636804

#	Time	Username	Problem	Language	Result	Execution time	Memory
636804		dsabolic	Catfish Farm (IOI22_fish)	C++17	Compilation error	0 ms	0 KiB

fish

#include <bits/stdc++.h>

using namespace std;
using ll = long long;

const int N = 305;

ll dp[N][N][2][2];
int n, m;
int* x;
int* y;
int* w;

int ima(int i, int j) {
	auto it = lower_bound(x, x + n, i);
	if(it == x + n) return 0;
	if(*it == i && y[it - x] == j) return w[it - x];
	else return 0;
}

ll solve(int i, int hp, bool f1, bool f2) {
	if(i == n) return 0;
	ll& ret = dp[i][hp][f1][f2];
	if(ret != -1) return ret;
	ret = 0;
	
	if(f2) {
		for(int h = 0; h <= n; ++h) {
			if(h == 0) {
				ret = max(ret, solve(i + 1, 0, 0, 1));
			} else {
				//ret = max(ret, solve(i + 1, 0, 0, 0) + ima(i - 1, h) + ima(i + 1, h));
				if(hp == h) ret = max(ret, solve(i + 1, h, 0, 0) + ima(i + 1, h));
				else ret = max(ret, solve(i + 1, h, 0, 0) + ima(i + 1, h) + ima(i - 1, h));
			}
		}
	} else {
		if(!f1) {
			for(int h = hp + 1; h <= n; ++h) {
				ret = max(ret, solve(i + 1, h, 0, 0) + ima(i - 1, h) + ima(i + 1, h));
			}
		}
		for(int h = hp; h >= 0; --h) {
			if(h == 0) {
				ret = max(ret, solve(i + 1, hp, 0, 1));
			} else {
				ret = max(ret, solve(i + 1, h, 1, 0) + ima(i + 1, h) - (h == hp) * ima(i, h));
			}
		}
	}
	
	return ret;
}

ll max_weights(int n, int m, int* x, int* y, int* w) {
	memset(dp, -1, sizeof dp);
	return solve(0, 0, 0, 0);
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccIwhGuD.o: in function `main':
grader.cpp:(.text.startup+0x25e): 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