第十一章模拟 7 AcWing 1531. 课程学生列表

矫情吗；* 2024-03-31 12:33 59阅读 0赞

## 第十一章 模拟 7 AcWing 1531. 课程学生列表 ##

### 原题链接 ###

[AcWing 1531. 课程学生列表][AcWing 1531.]

### 算法标签 ###

模拟

### 思路 ###

使用二维数组存储依题意每门课程对应学生id, 依题意模拟

### 代码 ###

#pragma GCC optimize(2)
    #pragma GCC optimize(3)
    #include<bits/stdc++.h>
    #define int long long
    #define xx first
    #define yy second
    #define ump unordered_map
    #define us unordered_set
    #define pq priority_queue
    #define rep(i, a, b) for(int i=a;i<b;++i)
    #define Rep(i, a, b) for(int i=a;i>=b;--i)
    using namespace std;
    typedef pair<int, int> PII;
    const int N=10005, inf=0x3f3f3f3f3f3f3f3f, mod=1e9+7;
    const double Exp=1e-8;
    //int t, n, m, cnt, ans; 
    int n, k, c, a; 
    string s;
    vector<string> le[N];
    char ch[5];
    inline int rd(){
       int s=0,w=1;
       char ch=getchar();
       while(ch<'0'||ch>'9'){if(ch=='-')w=-1;ch=getchar();}
       while(ch>='0'&&ch<='9') s=s*10+ch-'0',ch=getchar();
       return s*w;
    }
    void put(int x) {
        if(x<0) putchar('-'),x=-x;
        if(x>=10) put(x/10);
        putchar(x%10^48);
    }
    signed main(){
    	ios::sync_with_stdio(false);
    	cin.tie(0);
    	cout.tie(0);
    	scanf("%lld%lld", &n, &k);
    	while(n--){
    	    scanf("%s%lld", ch, &c);
    	    s=ch;
    	    while(c--){
    	        scanf("%lld", &a);
    	        le[a].push_back(s);
    	    }
    	}
    	rep(i, 1, k+1){
    	    printf("%lld %lld\n", i, le[i].size());
    	    sort(le[i].begin(), le[i].end());
    	    rep(j, 0, le[i].size()){
    	         printf("%s\n", le[i][j].c_str());
    	    }
    	}
    	return 0;
    }

### 参考文献 ###

[AcWing 1531. 课程学生列表（PAT甲级辅导课）y总视频讲解][AcWing 1531. _PAT_y]

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[AcWing 1531.]: https://www.acwing.com/problem/content/1533/
[AcWing 1531. _PAT_y]: https://www.acwing.com/video/1239/
[9cb4cb80a18345158f8a69e2f196e5b9.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/71691d312b6c4afba1d75e192281ec51.png