제출 #626027

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
626027		sword060	메기 농장 (IOI22_fish)	C++17	컴파일 에러	0 ms	0 KiB

fish

#include <bits/stdc++.h>
#include "fish.h"
using namespace std;
long long dp[100005][2],ar[100005];
long long rec(int i,bool f,int m){
  if(i==m)return 0;
  if(~dp[i][f^1])return dp[i][f^1];
  long long z=rec(i+1,1,m);
  if(f)return dp[i][0]=max(z,rec(i+1,0,m)+ar[i]);
  if(i<x-1)return dp[i][1]=max(z,rec(i+2,0,m)+ar[i]);
  return dp[i][1]=ar[i];
}
long long max_weights(int x,int k,vector<int> a,vector<int> b,vector<int> c){
  vector<pair<int,int>>l[2];
  long long ans=0,cur=0,cur2=0;
  bool f=1;
  for(int i=0;i<k;i++){
    l[a[i]%2].push_back({b[i],c[i]});
    if(a[i]%2)cur+=c[i];
    else cur2+=c[i];
    f&=(b[i]==0);
  }
  if(f){
    for(int i=0;i<x;i++)dp[i][0]=-1,dp[i][1]=-1,ar[i]=0;
    for(int i=0;i<k;i++)ar[a[i]]=c[i],ar[a[i]]=c[i];
    return rec(0,0,x);
  }
  sort(l[0].begin(),l[0].end());
  sort(l[1].begin(),l[1].end());
  ans=cur;
  if(x<=2){
    return max(cur,cur2);
  }
  int j=0;
  for(int i=0;i<(int)l[0].size();i++){
    cur+=l[0][i].second;
    while(j<l[1].size()&&l[1][j].first<=l[0][i].first){
      cur-=l[1][j].second;
      j++;
    }
    ans=max(ans,cur);
  }
  return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

fish.cpp: In function 'long long int rec(int, bool, int)':
fish.cpp:10:8: error: 'x' was not declared in this scope
   10 |   if(i<x-1)return dp[i][1]=max(z,rec(i+2,0,m)+ar[i]);
      |        ^
fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:37:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |     while(j<l[1].size()&&l[1][j].first<=l[0][i].first){
      |           ~^~~~~~~~~~~~