제출 #630195

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
630195	2022-08-15 23:38:15	ffao	메기 농장 (IOI22_fish)	C++17	100 / 100	520 ms	81676 KiB

fish

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include "fish.h"
using namespace std;
#include <vector>
#include <algorithm>
long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y, std::vector<int> W) {
    vector< vector<int> > Ys_per_col(N);
    
    vector<long long> colsum(N);
    for (int i = 0; i < M; i++) colsum[X[i]] += W[i];
    
    auto find = [&](int x, int y){ return (upper_bound(Ys_per_col[x].begin(), Ys_per_col[x].end(), y) - Ys_per_col[x].begin()) - 1; };
    
    for (int i = 0; i < M; i++) { X.push_back(X[i]); Y.push_back(Y[i]+1); W.push_back(0); }
    for (int i = 0; i < N; i++) { X.push_back(i); Y.push_back(-1); W.push_back(0); }
    for (int i = 0; i < N; i++) { X.push_back(i); Y.push_back(N); W.push_back(0); }
    for (int i = 0; i < X.size(); i++) {
        Ys_per_col[X[i]].push_back(Y[i]);
        if (X[i] > 0) Ys_per_col[X[i]-1].push_back(Y[i]);
        if (X[i]+1 < N) Ys_per_col[X[i]+1].push_back(Y[i]);
    }
    
    for (int i = 0; i < N; i++) {
        sort(Ys_per_col[i].begin(), Ys_per_col[i].end());
        Ys_per_col[i].erase( unique(Ys_per_col[i].begin(), Ys_per_col[i].end()), Ys_per_col[i].end());
    }
    
    vector< vector<int> > WW(N);
    for (int i = 0; i < N; i++) WW[i].resize(Ys_per_col[i].size());
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

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:18:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for (int i = 0; i < X.size(); i++) {
      |                     ~~^~~~~~~~~~

• 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