제출 #850834

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
850834		AliHasanli	메기 농장 (IOI22_fish)	C++17	컴파일 에러	0 ms	0 KiB

fish

#include <iostream>
#include <vector>
#include<map>
using namespace std;
map<int,int>mX,mY;
long long max_weights(int N, int M, vector<int> X, vector<int> Y, vector<int> W)
{
    for(int i=0;i<X.size();i++)
    {
        mX[X[i]]=1;
        mY[Y[i]]=1;
    }
    if(N==1)
        return 0;
    bool check=true;
    int maxX=0;
    for(int i:X)
        maxX=max(maxX,i);
    for(int i:X)
        if(i%2)
        {
            check=false;
            break;
        }
    long long ans=0;
    if(check)
    {
        for(int i=0;i<W.size();i++)
        ans+=W[i];
        return ans;
    }
    if(maxX==0)
    {
        for(int i=0;i<W.size();i++)
            ans+=W[i];
        return ans;
    }
    if(maxX==1)
    {
        long long ansX0=0,ansX1=0,ans=0;
        for(int i=0;i<X.size();i++)
            if(X[i]==1)
                ansX1+=W[i];
        ans=ansX1;
        for(int i=0;i<N;i++)
        {
            if(mY[i]==1 && mX[1]==1)
            ansX1-=W[i];
            if(mY[i]==1 && mX[0]==1)
            ansX0+=W[i];
            ans=max(ans,ansX0+ansX1);
        }
        return ans;
    }
    return 0;
}
int main() {
  int N, M;
  cin>>N>>M;
  vector<int> X(M), Y(M), W(M);
  for (int i = 0; i < M; ++i)
    cin>>X[i]>>Y[i]>>W[i];
  long long result = max_weights(N, M, X, Y, W);
  cout<<result;
  return 0;
}

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:8:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for(int i=0;i<X.size();i++)
      |                 ~^~~~~~~~~
fish.cpp:28:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |         for(int i=0;i<W.size();i++)
      |                     ~^~~~~~~~~
fish.cpp:34:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |         for(int i=0;i<W.size();i++)
      |                     ~^~~~~~~~~
fish.cpp:41:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |         for(int i=0;i<X.size();i++)
      |                     ~^~~~~~~~~
/usr/bin/ld: /tmp/ccPSOlXY.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccywIX9X.o:fish.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status