Submission #642201

#	Time	Username	Problem	Language	Result	Execution time	Memory
642201		tigar	Catfish Farm (IOI22_fish)	C++17	Compilation error	0 ms	0 KiB

fish

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

ll max_weights(int N, int M, int* X, int* Y, int* W)
{
    bool subtask1=true, subtask2=true, subtask3=true;
    for(int i=0; i<M; i++)
    {
        if(X[i]%2!=0)subtask1=false;
        if(X[i]>1)subtask2=false;
        if(Y[i]!=0)subtask3=false;
    }
    if(subtask1)
    {
        ll rez=0;
        for(int i=0; i<M; i++)rez+=W[i];
        return rez;
    }
    if(subtask2)
    {
        ll s1=0, s0=0, m[N][2];
        for(int i=0; i<M; i++)
        {
            if(X[i]==0)s0+=W[i];
            else s1+=W[i];
            m[Y[i]][X[i]]=W[i];
        }
        for(int i=0; i<N; i++)
        {
            m[i][0]=m[max(i-1, 0)][0]+m[i][0];
            m[i][1]=m[max(i-1, 0)][1]+m[i][1];
        }
        if(N==2)return max(m[N-1][0], m[N-1][1]);
        ll rez=0;
        for(int i=0; i<N; i++)
        {
            rez=max(rez, m[i][0]+m[N-1][1]-m[i][0]);
        }
        return rez;
    }
}

Compilation message (stderr)

fish.cpp: In function 'll max_weights(int, int, int*, int*, int*)':
fish.cpp:8:40: warning: variable 'subtask3' set but not used [-Wunused-but-set-variable]
    8 |     bool subtask1=true, subtask2=true, subtask3=true;
      |                                        ^~~~~~~~
fish.cpp:43:1: warning: control reaches end of non-void function [-Wreturn-type]
   43 | }
      | ^
/usr/bin/ld: /tmp/ccQCgEyY.o: in function `main':
grader.cpp:(.text.startup+0x25e): undefined reference to `max_weights(int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status