Submission #925251

#	Time	Username	Problem	Language	Result	Execution time	Memory
925251		IS_Rushdi	Catfish Farm (IOI22_fish)	C++17	9 / 100	1088 ms	23376 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){
    long long dp[n+1][4][4]{};
    vector<pair<int,int>>to[n+1];
    for(int i = 0; i < m; i++){to[x[i]+1].push_back({y[i]+1,w[i]});}
    for(int i = 0; i <= n; i++){
        to[i].push_back({0,0});
        to[i].push_back({n,0});

    }
    for(int i = 0; i < 4; i++){
        for(int j = 0; j < 4; j++){
            dp[0][i][j] = -1e18;
        }
    }
    dp[0][0][0] = 0;
    long long ans = 0;
    for(int i = 1; i <= n; i++){
        for(int j = 0; j < to[max(i-2,0)].size(); j++){
            for(int k = 0; k < to[i-1].size(); k++){
                for(int v = 0; v < to[i].size(); v++){
                    long long now = dp[i-1][k][j];
                    int cur = to[i][v].first;
                    for(auto nodes : to[i-1]){
                        if(cur > max(to[i-2][j].first,to[i-1][k].first)){
                            if(nodes.first > max(to[i-2][j].first,to[i-1][k].first)){
                                now += nodes.second;
                            }
                        }
                    }
                    cur = to[i-1][k].first;
                    for(auto nodes : to[i]){
                        if(cur > to[i][v].first){
                            if(nodes.first > to[i][v].first){
                                now += nodes.second;
                            }
                        }
                    }
                    
                    dp[i][v][k] = max(dp[i][v][k],now);
                    ans = max(ans,now);
                }
            }
        }
    }
    return ans;
}

// int main(){
//     cout << max_weights(5, 4, {0, 1, 4, 3}, {2, 1, 4, 3}, {5, 2, 1, 3}) << '\n';
// }

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:23:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |         for(int j = 0; j < to[max(i-2,0)].size(); j++){
      |                        ~~^~~~~~~~~~~~~~~~~~~~~~~
fish.cpp:24:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |             for(int k = 0; k < to[i-1].size(); k++){
      |                            ~~^~~~~~~~~~~~~~~~
fish.cpp:25:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |                 for(int v = 0; v < to[i].size(); v++){
      |                                ~~^~~~~~~~~~~~~~

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