제출 #829272

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
829272		FatihSolak	Catfish Farm (IOI22_fish)	C++17	0 / 100	55 ms	21856 KiB

fish

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

long long max_weights(int N, int M, vector<int> X, vector<int> Y, vector<int> W){
	vector<pair<int,int>> v[N];
	vector<long long>pre[N];
	for(int i = 0;i<M;i++){
		v[X[i]].push_back({Y[i],W[i]});
	}
	for(int i = 0;i<N;i++){
		v[i].push_back({N+1,0});
		sort(v[i].begin(),v[i].end());
		pre[i].assign(v[i].size(),0);
		for(int j = 0;j<v[i].size();j++){
			pre[i][j] = v[i][j].second + (j?pre[i][j-1]:0);
		}
	}
    vector<pair<int,long long>> dp[N + 1];
    dp[0].push_back({0,0});
    for(int i = 0;i<N;i++){
        vector<pair<int,long long>> ndp[N + 1];
        for(int y = 0;y<N + 1;y++){
            for(auto u:dp[y]){
                for(auto c:v[i]){
                    array<long long,3> nw;
                    nw[0] = u.first;
                    nw[1] = c.first-1;
                    nw[2] = u.second;
                    // if(c.first - 1 <= u.first){
                    //     for(auto x:v[i]){
                    //         if(c.first-1 < x.first && x.first <= u.first)
                    //             nw[2] += x.second;
                    //     }
                    // }
                    // else{
                    //     if(i){
                    //         for(auto x:v[i-1]){
                    //             if(u.first < x.first && y-1 < x.first && x.first <= c.first - 1)
                    //                 nw[2] += x.second;
                    //         }
                    //     }
                    // }
                    if(nw[0] + 1 < 0 || nw[0] + 1 > N)
                        return 0;
                    ndp[nw[0] + 1].push_back({nw[1],nw[2]});
                }
            }
        }
        for(int j = 0;j<N + 1;j++){
            sort(ndp[j].begin(),ndp[j].end());
            vector<pair<int,long long>> tmp;
            for(auto u:ndp[j]){
                if(tmp.empty() || u.first != tmp.back().first)
                    tmp.push_back(u);
                else tmp.back().second = max(tmp.back().second,u.second);
            }
            ndp[j] = tmp;
            dp[j] = ndp[j];
        }
    }
    long long ans = 0;
    for(int i = 0;i<N + 1;i++){
        for(auto c:dp[i]){
            ans = max(ans,c.second);
        }
    }
    return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:15:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |   for(int j = 0;j<v[i].size();j++){
      |                 ~^~~~~~~~~~~~

• 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