Submission #1240110

#	Time	Username	Problem	Language	Result	Execution time	Memory
1240110		vtnoo	Catfish Farm (IOI22_fish)	C++20	0 / 100	49 ms	9796 KiB

fish

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y,
                      std::vector<int> W){
	if(N==2){
		ll sum[2];
		for(int i=0;i<M;i++){
			if(X[i]==1)sum[1]+=W[i];
			else sum[0]+=W[i];
		}
		return max(sum[0], sum[1]);
	}
	if(N>2){
		ll x1=0;
		vector<vector<ll>> g(2, vector<ll>(N, 0ll));
		for(int i=0;i<M;i++){
			g[X[i]][Y[i]]+=W[i];
			if(X[i]==1)x1+=W[i];
		}
		ll ans=0, cur=0;
		for(int i=0;i<N;i++){
			x1-=(ll)g[1][i];
			cur+=(ll)g[0][i];
			ans=max(ans, x1+cur);
		}
		return ans;
	}
}

Compilation message (stderr)

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:33:1: warning: control reaches end of non-void function [-Wreturn-type]
   33 | }
      | ^

• Subtask 1: 0 / 3
• Subtask 2: 0 / 6
• Subtask 3: 0 / 9
• Subtask 4: 0 / 14
• Subtask 5: 0 / 21
• Subtask 6: 0 / 17
• Subtask 7: 0 / 14
• Subtask 8: 0 / 16