Submission #6320240

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
namespace Flandle_Scarlet
{
    #define N 1010
    #define MEM(x,a) memset(x,a,sizeof(x))
    #define CLS(x) memset(x,0,sizeof(x))
    int n,m;
    int a[N][N];
    void R1(int &x)
    {
        x=0;char c=getchar();int f=1;
        while(c<'0' or c>'9') f=(c=='-')?-1:1,c=getchar();
        while(c>='0' and c<='9') x=(x<<1)+(x<<3)+(c^48),c=getchar();
        x=(f==1)?x:-x;
    }
    void Input()
    {
        R1(n),R1(m);
        for(int i=1;i<=n;++i)
        {
            for(int j=1;j<=m;++j)
            {
                R1(a[i][j]);
            }
        }
    }

    struct node
    {
        int id;//identifier
        int cnt;//favourite count
    }sport[N];bool operator<(node a,node b){return a.cnt>b.cnt;}
    bool vis[N];
    void Soviet()
    {
        //choose all
        for(int i=1;i<=n;++i)
        {
            ++sport[a[i][1]].cnt;
            sport[i].id=i;
        }

        int ans=0x3f3f3f3f;
        for(int i=1;i<=m;++i)
        {
            sort(sport+1,sport+m+1);
            //sport[1] have the max cnt
            ans=min(ans,sport[1].cnt);

            vis[sport[1].id]=1;//delete the most popular sport
            CLS(sport);
            for(int i=1;i<=m;++i)
            {
                sport[i].id=i;
            }
            for(int i=1;i<=n;++i)//for each player
            {
                for(int j=1;j<=m;++j)//find the favourite sport in all remaining sport
                {
                    if (!vis[a[i][j]])
                    {
                        ++sport[a[i][j]].cnt;
                        break;
                    }
                }
            }
        }
        printf("%d\n",ans);
    }
    void IsMyWife()
    {
        if (0)
        {
            freopen("","r",stdin);
            freopen("","w",stdout);
        }
        Input();
        Soviet();
    }
};
int main()
{
    Flandle_Scarlet::IsMyWife();
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘void Flandle_Scarlet::IsMyWife()’:
./Main.cpp:75:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]
             freopen("","r",stdin);
                                  ^
./Main.cpp:76:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]
             freopen("","w",stdout);
                                   ^

Judge Result