Submission #1247473

#	Time	Username	Problem	Language	Result	Execution time	Memory
1247473		fskarica	Catfish Farm (IOI22_fish)	C++20	Compilation error	0 ms	0 KiB

fish

#include "fish.h"
#include <bits/stdc++.h>

using namespace std;

#define int long long
#define ll long long
#define fi first
#define se second
#define pii pair<int, int>

const int MAX = 3010;
int n, m;
vector <int> vx, vy, w;
ll dp[MAX][MAX][2];
int mat[MAX][MAX];

ll max_weights(int N, int M, vector<int> X, vector<int> Y, vector<int> W) {
    n = N, m = M, vx = X, vy = Y, w = W;

    for (int i = 0; i < m; i++) {
        vx[i]++;
        vy[i]++;

        mat[vx[i]][vy[i]] += w[i];
    }

    for (int i = 2; i <= n; i++) {
        for (int j = 0; j <= n; j++) dp[i][j][0] = max(dp[i - 1][j][0], dp[i - 1][j][1]);
        for (int j = 0; j <= n; j++) dp[i][j][1] = max(dp[i - 1][j][0], dp[i - 1][j][1]);

        ll maxx = 0;
        for (int j = n; j >= 0; j--) {
            maxx = max(maxx, max(dp[i - 1][j][0], dp[i - 1][j][1]));

            dp[i][j][0] = max(dp[i][j][0], maxx);

            maxx += mat[i][j];
        }

        maxx = 0;
        for (int j = 0; j <= n; j++) {
            maxx += mat[i - 1][j];
            maxx = max(maxx, dp[i - 1][j][1]);

            dp[i][j][1] = max(dp[i][j][1], maxx);
        }

        for (int j = 0; j <= n; j++) dp[i][j][0] = max(dp[i][j][0], dp[i][j][1]);
    }

    ll ret = 0;
    for (int i = 0; i <= n; i++) ret = max(ret, max(dp[n][i][0], dp[n][i][1]));

    return ret;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccSAYUG4.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