CF441A Valera and Antique Items题面


有 n 个人,第 i 个人有 k[i] 个数。第 i 个人的第 j 个数的大小为 a[i][j],你拥有一个数大小为 v ,如果你的数 v 严格大于某人的至少一个数。那么认为你可以和这个人达成协议。



因为数据不大,我们可以直接对于每一个人暴力判断是否有一个数比给出的 v 小即可。




using namespace std;
typedef long long ll;
const int maxn=1e6+7;
ll read() 
    ll res=0,f=1;
    char c=getchar();
    while(!isdigit(c) && c!='-') c=getchar();
    if(c=='-') f=-1,c=getchar();
    while(isdigit(c)) res=(res<<1)+(res<<3)+c-48,c=getchar();
    return res*f;
int tot,ans[maxn];
int main()
    int n=read(),v=read();
    for(int i=1;i<=n;i++)
        int k=read();          //我们可以直接边读入边做
        bool bl=0;            //bl表示当前人是否能达成协议
        for(int j=1;j<=k;j++)
            int x=read();
            if(x<v) bl=1;      //注意题目要求严格大于
        if(bl) ans[++tot]=i;
    for(int i=1;i<=tot;i++) printf("%d ",ans[i]);
    return 0;


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