제출 #90032

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
90032		Bodo171	결혼 문제 (IZhO14_marriage)	C++14	100 / 100	529 ms	2672 KiB

marriage

#include <iostream>
#include <fstream>
#include <vector>
#include <algorithm>
#include <string>
using namespace std;
const int nmax=30005;
const int mmax=100005;
vector<int> v[nmax];
int l[nmax],r[nmax],L[nmax],R[nmax];
int ls[mmax];
bool viz[nmax];
bool changed;
int n,m,i,j,k,a,b,p,cupl,ans,nr;
bool cup(int x)
{
    if(viz[x])
        return 0;
    viz[x]=1;
    for(int it=L[x];it<=R[x]&&ls[it]<=i;it++)
        if(!r[ls[it]])
    {
        l[x]=ls[it];
        r[ls[it]]=x;
        return 1;
    }
    for(int it=L[x];it<=R[x]&&ls[it]<=i;it++)
        if(cup(r[ls[it]]))
    {
        l[x]=ls[it];
        r[ls[it]]=x;
        return 1;
    }
    return 0;
}
void cc()
{
    changed=1;
    while(changed&&cupl<m)
    {
        changed=0;
        for(j=1; j<=m; j++)
            if((!l[j])&&cup(j))
            {
                cupl++;
                changed=1;
            }
        for(j=1;j<=m;j++)
            viz[j]=0;

    }
}
int ch,num;
string s;
int getnum()
{
    num=0;
    while(s[ch]>='0'&&s[ch]<='9')
    {
        num=num*10+s[ch]-'0';
        ch++;
    }
    ch++;
    return num;
}
int main()
{
    //freopen("data.in","r",stdin);
    ios_base::sync_with_stdio(false);
    cin>>n>>m>>k;
    getline(cin,s);
    for(i=1;i<=k;i++)
    {
        getline(cin,s);ch=0;
        a=getnum();b=getnum();
        v[b].push_back(a);
    }
    for(i=1;i<=m;i++)
    {
        L[i]=nr+1;sort(v[i].begin(),v[i].end());
        for(j=0;j<v[i].size();j++)
        {
            ls[++nr]=v[i][j];
        }
        R[i]=nr;
    }
    p=1;
    for(i=1;i<=n;i++)
    {
        if(i>=m)cc();
        while(cupl==m)
        {
            for(j=1;j<=m;j++)
                while(L[j]<=R[j]&&ls[L[j]]<=p)
                  L[j]++;
            if(r[p])
                l[r[p]]=0,r[p]=0,cupl--;
            p++;
            cc();

        }
        ans+=(p-1);
    }
    cout<<ans;
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

marriage.cpp: In function 'int main()':
marriage.cpp:81:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(j=0;j<v[i].size();j++)
                 ~^~~~~~~~~~~~

• Subtask 1: 100 / 100