Submission #626202

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
626202	2022-08-11 09:48:33	mraron	Catfish Farm (IOI22_fish)	C++17	100 / 100	231 ms	19840 KiB

fish

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#include "fish.h"
#include <vector>
#include <algorithm>
#include <iostream>
using namespace std;
using ll = long long ;
#define sz(x) (int)(x).size()
#define xx first
#define yy second
//dp0[i][j] -> i. oszlopban j-ig elé építve piert max hogyha mindkettő szomszédosnál magasabb
//dp1[i][j] -> i. oszlopban j-ig elé építve piert max hogyha bal oldali számít
//dp2[i][j] -> i. oszlopban j-ig elé építve piert max hogyha jobb oldali számít
long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y,
                      std::vector<int> W) {
    vector<vector<pair<int,ll>>> lst(N+2, vector<pair<int,ll>>());
    for(int i=0;i<M;++i) {
        lst[X[i]].push_back({Y[i], W[i]});
    }
    for(int i=0;i<=N+1;++i) lst[i].push_back({N+10,0});
    for(auto& i:lst) sort(i.begin(), i.end());
    for(auto& i:lst) 
        for(int j=1;j<sz(i);++j) i[j].yy+=i[j-1].yy;
    
 
 
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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:63:12: warning: unused variable 'mxdp2' [-Wunused-variable]
   63 |         ll mxdp2=*max_element(dp2.begin(), dp2.end());
      |            ^~~~~
fish.cpp:41:10: warning: variable 'get_sum' set but not used [-Wunused-but-set-variable]
   41 |     auto get_sum=[&](int x, int l, int r) -> ll {
      |          ^~~~~~~

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