제출 #712562

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
712562		josanneo22	메기 농장 (IOI22_fish)	C++17	0 / 100	104 ms	25740 KiB

fish

#include "fish.h"
#include<bits/stdc++.h>
#include<iostream>
#include<math.h>
#include <vector>
using namespace std;
long long max_weights(int n, int m, std::vector<int> x, std::vector<int> y,std::vector<int> w) {
    int mx1 = -1, mx2 = -1;
    vector<vector<long long>> grid(n, vector<long long>(2,0LL));
    for (int i = 0; i < m; i++) {
        if (x[i] == 0) mx1 = max(mx1, y[i]);
        else if(x[i]==1) mx2 = max(mx2, y[i]);
        grid[y[i]][x[i]] = w[i];
    }
    if (mx1 == -1 || mx2 == -1) {
        long long ans = 0;
        for (int i = 0; i < m; i++) {
            ans += (long long)w[i];
        }
        return ans;
    }
    else {
        long long ans = 0;
        long long meow0 = 0,meow1 = 0;
        for (int i = mx1; i >= 0;i--) {
            meow0 += grid[i][0];
        }
        for (int i = mx2; i >= 0; i--) {
            meow1 += grid[i][1];
        }
        if (meow0 > meow1) {
            long long tmp = 0;
            if (n >= 3) {
                for (int i = mx2; i >= mx1+1; i--) {
                    meow1 += grid[i][1];
                }
            }
            return max(meow0+tmp, meow1);
        }
    }
}

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:23:19: warning: unused variable 'ans' [-Wunused-variable]
   23 |         long long ans = 0;
      |                   ^~~
fish.cpp:9:63: warning: control reaches end of non-void function [-Wreturn-type]
    9 |     vector<vector<long long>> grid(n, vector<long long>(2,0LL));
      |                                                               ^

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