hdu 5071(2014鞍山现场赛B题，大模拟）

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=5071

思路：模拟题，没啥可说的，移动的时候需要注意top的变化。

#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
using namespace std;

const int MAX_N = (5000 + 500);
struct Girl {
    int priority;
    __int64 words;
    Girl() {}
    Girl(int _priority, __int64 _words) : priority(_priority), words(_words) {}
};

struct Queue {
    int len, top;
    struct Girl girl[MAX_N];

    void Init() {
        len = 0;
        top = -1;
    }

    void Add(int u) {
        int tag = 0;
        for (int i = 0; i < len; ++i) {
            if (girl[i].priority == u) {
                tag = 1;
                break;
            }
        }
        if (tag) {
            puts("same priority.");
            return;
        }
        girl[len++] = Girl(u, 0);
        puts("success.");
    }

    void Close(int u) {
        int pos = -1;
        for (int i = 0; i < len; ++i) {
            if (girl[i].priority == u) {
                pos = i;
                break;
            }
        }
        if (pos == -1) {
            puts("invalid priority.");
            return;
        }

        printf("close %d with %I64d.
", girl[pos].priority, girl[pos].words);

        if (top != -1) {
            if (top == pos) top = -1;
            else if (top > pos) top--;
        }

        for (int i = pos + 1; i < len; ++i) {
            girl[i - 1] = girl[i];
        }
        --len;
    }

    void Chat(int w) {
        if (len == 0) {
            puts("empty.");
            return;
        }

        puts("success.");

        if (top == -1) {
            girl[0].words += (__int64)w;
        } else
            girl[top].words += (__int64)w;
    }

    void Rotate(int x) {
        if (x < 0 || x >= len) {
            puts("out of range.");
            return;
        }

        puts("success.");
        if (top != -1) {
            if (top == x) top = 0;
            else if (top < x) top++;
        }

        Girl tmp = girl[x];
        for (int i = x; i > 0; --i) girl[i] = girl[i - 1];
        girl[0] = tmp;
    }

    void Prior() {
        if (len == 0) {
            puts("empty.");
            return;
        }

        puts("success.");
        int max_priority = -1, pos = -1;
        for (int i = 0; i < len; ++i) {
            if (girl[i].priority > max_priority) max_priority = girl[i].priority, pos = i;
        }
        if (pos > 0) {
            if (top != -1) {
                if (top == pos) top = 0;
                else if (top < pos) top++;
            }

            Girl tmp = girl[pos];
            for (int i = pos; i > 0; --i) {
                girl[i] = girl[i - 1];
            }
            girl[0] = tmp;
        }
    }

    void Choose(int u) {
        int pos = -1;
        for (int i = 0; i < len; ++i) {
            if (girl[i].priority == u) {
                pos = i;
                break;
            }
        }
        if (pos == -1) {
            puts("invalid priority.");
            return;
        }

        puts("success.");
        if (top != -1) {
            if (top == pos) top = 0;
            else if (top < pos) top++;
        }

        Girl tmp = girl[pos];
        for (int i = pos; i > 0; --i) girl[i] = girl[i - 1];
        girl[0] = tmp;
    }

    void Top(int u) {
        int pos = -1;
        for (int i = 0; i < len; ++i) {
            if (girl[i].priority == u) {
                pos = i;
                break;
            }
        }
        if (pos == -1) {
            puts("invalid priority.");
            return;
        }

        puts("success.");
        top = pos;
    }

    void Untop() {
        if (top == -1) {
            puts("no such person.");
            return;
        }

        puts("success.");
        top = -1;
    }

    void Bye() {
        if (top != -1 && girl[top].words > 0) {
            printf("Bye %d: %I64d
", girl[top].priority, girl[top].words);
        }

        for (int i = 0; i < len; ++i) {
            if (i != top && girl[i].words > 0) {
                printf("Bye %d: %I64d
", girl[i].priority, girl[i].words);
            }
        }
    }
} que;

int N, u, w, x;
char str[22];

int main()
{
    int cas;
    scanf("%d", &cas);
    while (cas--) {

        scanf("%d", &N);

        que.Init();

        for (int i = 1; i <= N; ++i) {
            scanf("%s", str);

            printf("Operation #%d: ", i);
            if (strcmp(str, "Add") == 0) {
                scanf("%d", &u);
                que.Add(u);
            } else if (strcmp(str, "Close") == 0) {
                scanf("%d", &u);
                que.Close(u);
            } else if (strcmp(str, "Chat") == 0) {
                scanf("%d", &w);
                que.Chat(w);
            } else if (strcmp(str, "Rotate") == 0) {
                scanf("%d", &x);
                que.Rotate(x - 1);
            } else if (strcmp(str, "Prior") == 0) {
                que.Prior();
            } else if (strcmp(str, "Choose") == 0) {
                scanf("%d", &u);
                que.Choose(u);
            } else if (strcmp(str, "Top") == 0) {
                scanf("%d", &u);
                que.Top(u);
            } else if (strcmp(str, "Untop") == 0) {
                que.Untop();
            }
        }

        que.Bye();
    }
    return 0;
}