Submission #763594

#	Time	Username	Problem	Language	Result	Execution time	Memory
763594		OrazB	Catfish Farm (IOI22_fish)	C++17	Compilation error	0 ms	0 KiB

fish

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <functional>
using namespace __gnu_pbds;
using namespace std;
typedef tree<int, null_type, less<int>, rb_tree_tag,
             tree_order_statistics_node_update>
    ordered_set;
//Dijkstra->set
//set.find_by_order(x) x-position value
//set.order_of_key(x) number of strictly less elements don't need *set.??
#define N 100005
#define wr cout << "Continue debugging\n";
#define all(x) (x).begin(), (x).end()
#define ll long long int
#define pii pair <ll, int>
#define pb push_back
#define ff first
#define ss second

ll max_weights(int n, int m, vector<int> x, vector<int> y, vector<int> w){
	int nn = *max_element(all(y))+1;
	vector<vector<ll>> a(n, vector<ll> (nn+1, 0));
	for (int i = 0; i < m; i++){
		a[x[i]][y[i]] = w[i];
	}
	for (int i = 0; i < n; i++){
		for (int j = 1; j < nn; j++){
			a[i][j] += a[i][j-1];
		}
	}
	vector<vector<pii>> dp(n, vector<pii>(nn+1, {0, -1}));
	// vector<vector<vector<ll>>> dp(n, vector<vector<ll>>(nn+1, vector<ll>(2, 0)));
	vector<ll> cur(n, 0);
	for (int i = 0; i < nn; i++){
		if (a[0][i] < a[1][nn-1]){
			dp[1][i] = {a[1][nn-1], nn-1};
		}else{
			dp[1][i].ff = a[0][i];
		}
	}
	cur[1] = a[1][nn-1];
	for (int i = 2; i < n; i++){
		for (int j = 0; j < nn; j++){
			for (int k = 0; k <= j; k++){
				ll x = dp[i-1][k].ff+(j > dp[i-1][k].ss ? a[i-1][j]-a[i-1][max(k,dp[i-1][k].ss)] : 0);
				if (x > dp[i][j].ff) dp[i][j] = {x, k};
			}
			for (int k = j+1; k < nn; k++){
				ll x = dp[i-1][k].ff+a[i][k]-a[i][j];
				if (x > dp[i][j].ff) dp[i][j] = {x, k};
			}
			// if (i == 1 and j == 0) cout << dp[i][j].ff << '\n'; 
			for (int k = 0; k < nn; k++){
				ll x = a[i-1][max(j,k)]+dp[i-2][k].ff;
				if (x > dp[i][j].ff) dp[i][j] = {x, -1};
			}
			ll x = cur[i-2]+a[i-1][j];
			if (x > dp[i][j].ff) dp[i][j] = {x, -1};
		}
		cur[i] = max(cur[i], cur[i-1]);
		for (int k = 0; k < nn; k++){
			cur[i] = max(cur[i], dp[i-1][k].ff+a[i][k]);
		}
	}
	// cout << cur[n-1] << '\n';
	return max(cur[n-1], (*max_element(all(dp[n-1]))).ff);
}

int main ()
{
	int n, m;
	cin >> n >> m;
	vector<int> x(m), y(m), w(m);
	for (int i = 0; i < m; i++) cin >> x[i] >> y[i] >> w[i];
	cout << max_weights(n,m,x,y,w);
}	

Compilation message (stderr)

/usr/bin/ld: /tmp/cceuCJij.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccHfGf5j.o:fish.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status