zoj 2184 Booklets

#include<iostream>#include<cstdio>#include<algorithm>#include<string.h>using namespace std;enum {    SIZ = 3004,};int S, N, P;struct Node {    int page;    int pos;    bool operator<(const Node&o)const{        if (page != o.page) return page < o.page;        return pos < o.pos;    }};Node book[SIZ];void fun(){    sort(book, book+N);    int div = N / S;    int mod = N % S;    int v, dis;    if (P < mod ){        v = (div + 1) * P;        dis = (div + 1);    } else {        v = (div + 1) * mod + div * (P-mod);        dis = div;    }    Node *ptr = &book[v];    for(int i=0; i<dis; ++i, ++ptr){        if (ptr->pos < book[v].pos){ v = ptr - book;        }    }    printf("%dn", book[v].page);}int readIn(){    if (scanf("%d ", &S) < 0)        return 0;    scanf("%d%d ", &P, &N);    for(int i=0; i<N; i++){        scanf("%d ", &book[i].page);        book[i].pos = i;    }    return 1;}int main(){    while(readIn() > 0){        fun();    }    return 0;}