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답안 #824045

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
824045 2023-08-13T12:10:16 Z Amylopectin Stranded Far From Home (BOI22_island) C++14
100 / 100
 199 ms 79072 KB 
#include <stdio.h>
#include <iostream>
#include <vector>
#include <queue>
#include <algorithm>
using namespace std;
const long long mxn = 1e6 + 10;
struct we
{
    long long idx,val;
};
bool cmp(const struct we &l,const struct we &r)
{
    return l.val < r.val;
}
struct we sot[mxn] = {};
char ans[mxn] = {};
long long npop[mxn] = {},gr[mxn] = {},he[mxn] = {},siz[mxn] = {},u[mxn] = {};
vector<long long> pat[mxn] = {},tre[mxn] = {};
long long figr(long long l)
{
    long long cl = l,f;
    while(l != gr[l])
    {
        l = gr[l];
    }
    while(cl != gr[cl])
    {
        f = gr[cl];
        gr[cl] = l;
        cl = f;
    }
    return l;
}
long long mer(long long cl,long long cr)
{
    long long l = figr(cl),r = figr(cr);
    gr[r] = l;
    siz[l] += siz[r];
    return l;
}
long long re(long long cn)
{
    long long i,j,fn;
    ans[cn] = '1';
    for(i=0; i<tre[cn].size(); i++)
    {
        fn = tre[cn][i];
        re(fn);
    }
    return 0;
}
int main()
{
    long long i,j,n,m,cn,cm,fn,fm;
    scanf("%lld %lld",&n,&m);
    for(i=0; i<n; i++)
    {
        scanf("%lld",&npop[i]);
        sot[i] = {i,npop[i]};
        he[i] = i;
        gr[i] = i;
        siz[i] = npop[i];
        ans[i] = '0';
    }
    for(i=0; i<m; i++)
    {
        scanf("%lld %lld",&cn,&cm);
        pat[cn-1].push_back(cm-1);
        pat[cm-1].push_back(cn-1);
    }
    sort(sot,sot+n,cmp);
    for(i=0; i<n; i++)
    {
        cn = sot[i].idx;
        u[cn] = 1;
        for(j=0; j<pat[cn].size(); j++)
        {
            fn = pat[cn][j];
            if(u[fn] == 0)
            {
                continue;
            }
            cm = figr(cn);
            fm = figr(fn);
            if(cm != fm)
            {
                if(siz[fm] >= npop[cn])
                {
                    tre[cn].push_back(he[fm]);
                }
                mer(cm,fm);
            }
        }
    }
    re(sot[n-1].idx);
    printf("%s\n",ans);
    return 0;
}

Compilation message

island.cpp: In function 'long long int re(long long int)':
island.cpp:46:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |     for(i=0; i<tre[cn].size(); i++)
      |              ~^~~~~~~~~~~~~~~
island.cpp:44:17: warning: unused variable 'j' [-Wunused-variable]
   44 |     long long i,j,fn;
      |                 ^
island.cpp: In function 'int main()':
island.cpp:77:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |         for(j=0; j<pat[cn].size(); j++)
      |                  ~^~~~~~~~~~~~~~~
island.cpp:56:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |     scanf("%lld %lld",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
island.cpp:59:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |         scanf("%lld",&npop[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~
island.cpp:68:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   68 |         scanf("%lld %lld",&cn,&cm);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 47324 KB Output is correct
2 Correct 21 ms 47216 KB Output is correct
3 Correct 20 ms 47308 KB Output is correct
4 Correct 21 ms 47444 KB Output is correct
5 Correct 22 ms 47476 KB Output is correct
6 Correct 22 ms 47544 KB Output is correct
7 Correct 23 ms 47444 KB Output is correct
8 Correct 22 ms 47436 KB Output is correct
9 Correct 22 ms 47564 KB Output is correct
10 Correct 28 ms 47472 KB Output is correct
11 Correct 23 ms 47436 KB Output is correct
12 Correct 22 ms 47528 KB Output is correct
13 Correct 21 ms 47536 KB Output is correct
14 Correct 21 ms 47444 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 47240 KB Output is correct
2 Correct 20 ms 47200 KB Output is correct
3 Correct 141 ms 70668 KB Output is correct
4 Correct 155 ms 71780 KB Output is correct
5 Correct 142 ms 72052 KB Output is correct
6 Correct 140 ms 72928 KB Output is correct
7 Correct 147 ms 72884 KB Output is correct
8 Correct 158 ms 74800 KB Output is correct
9 Correct 127 ms 72152 KB Output is correct
10 Correct 104 ms 70096 KB Output is correct
11 Correct 110 ms 72728 KB Output is correct
12 Correct 141 ms 72748 KB Output is correct
13 Correct 119 ms 73660 KB Output is correct
14 Correct 151 ms 73784 KB Output is correct
15 Correct 125 ms 79008 KB Output is correct
16 Correct 126 ms 78100 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 47308 KB Output is correct
2 Correct 162 ms 67228 KB Output is correct
3 Correct 187 ms 71740 KB Output is correct
4 Correct 129 ms 75212 KB Output is correct
5 Correct 134 ms 73536 KB Output is correct
6 Correct 169 ms 71744 KB Output is correct
7 Correct 149 ms 79064 KB Output is correct
8 Correct 176 ms 79072 KB Output is correct
9 Correct 102 ms 77988 KB Output is correct
10 Correct 123 ms 71636 KB Output is correct
11 Correct 128 ms 71140 KB Output is correct

Subtask #4
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 47252 KB Output is correct
2 Correct 199 ms 68796 KB Output is correct
3 Correct 171 ms 73088 KB Output is correct
4 Correct 181 ms 73472 KB Output is correct
5 Correct 156 ms 74432 KB Output is correct
6 Correct 154 ms 73800 KB Output is correct
7 Correct 123 ms 73880 KB Output is correct
8 Correct 112 ms 77452 KB Output is correct
9 Correct 136 ms 63756 KB Output is correct
10 Correct 139 ms 73012 KB Output is correct
11 Correct 135 ms 71116 KB Output is correct

Subtask #5
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 47324 KB Output is correct
2 Correct 21 ms 47216 KB Output is correct
3 Correct 20 ms 47308 KB Output is correct
4 Correct 21 ms 47444 KB Output is correct
5 Correct 22 ms 47476 KB Output is correct
6 Correct 22 ms 47544 KB Output is correct
7 Correct 23 ms 47444 KB Output is correct
8 Correct 22 ms 47436 KB Output is correct
9 Correct 22 ms 47564 KB Output is correct
10 Correct 28 ms 47472 KB Output is correct
11 Correct 23 ms 47436 KB Output is correct
12 Correct 22 ms 47528 KB Output is correct
13 Correct 21 ms 47536 KB Output is correct
14 Correct 21 ms 47444 KB Output is correct
15 Correct 21 ms 47240 KB Output is correct
16 Correct 20 ms 47200 KB Output is correct
17 Correct 141 ms 70668 KB Output is correct
18 Correct 155 ms 71780 KB Output is correct
19 Correct 142 ms 72052 KB Output is correct
20 Correct 140 ms 72928 KB Output is correct
21 Correct 147 ms 72884 KB Output is correct
22 Correct 158 ms 74800 KB Output is correct
23 Correct 127 ms 72152 KB Output is correct
24 Correct 104 ms 70096 KB Output is correct
25 Correct 110 ms 72728 KB Output is correct
26 Correct 141 ms 72748 KB Output is correct
27 Correct 119 ms 73660 KB Output is correct
28 Correct 151 ms 73784 KB Output is correct
29 Correct 125 ms 79008 KB Output is correct
30 Correct 126 ms 78100 KB Output is correct
31 Correct 21 ms 47308 KB Output is correct
32 Correct 162 ms 67228 KB Output is correct
33 Correct 187 ms 71740 KB Output is correct
34 Correct 129 ms 75212 KB Output is correct
35 Correct 134 ms 73536 KB Output is correct
36 Correct 169 ms 71744 KB Output is correct
37 Correct 149 ms 79064 KB Output is correct
38 Correct 176 ms 79072 KB Output is correct
39 Correct 102 ms 77988 KB Output is correct
40 Correct 123 ms 71636 KB Output is correct
41 Correct 128 ms 71140 KB Output is correct
42 Correct 21 ms 47252 KB Output is correct
43 Correct 199 ms 68796 KB Output is correct
44 Correct 171 ms 73088 KB Output is correct
45 Correct 181 ms 73472 KB Output is correct
46 Correct 156 ms 74432 KB Output is correct
47 Correct 154 ms 73800 KB Output is correct
48 Correct 123 ms 73880 KB Output is correct
49 Correct 112 ms 77452 KB Output is correct
50 Correct 136 ms 63756 KB Output is correct
51 Correct 139 ms 73012 KB Output is correct
52 Correct 135 ms 71116 KB Output is correct
53 Correct 21 ms 47316 KB Output is correct
54 Correct 21 ms 47272 KB Output is correct
55 Correct 20 ms 47264 KB Output is correct
56 Correct 22 ms 47444 KB Output is correct
57 Correct 22 ms 47536 KB Output is correct
58 Correct 22 ms 47444 KB Output is correct
59 Correct 22 ms 47548 KB Output is correct
60 Correct 23 ms 47416 KB Output is correct
61 Correct 22 ms 47540 KB Output is correct
62 Correct 22 ms 47436 KB Output is correct
63 Correct 22 ms 47444 KB Output is correct
64 Correct 22 ms 47544 KB Output is correct
65 Correct 21 ms 47536 KB Output is correct
66 Correct 24 ms 47444 KB Output is correct
67 Correct 128 ms 75056 KB Output is correct
68 Correct 131 ms 74292 KB Output is correct
69 Correct 135 ms 72084 KB Output is correct
70 Correct 134 ms 72852 KB Output is correct
71 Correct 143 ms 72912 KB Output is correct
72 Correct 146 ms 74820 KB Output is correct
73 Correct 125 ms 72144 KB Output is correct
74 Correct 102 ms 70000 KB Output is correct
75 Correct 105 ms 72760 KB Output is correct
76 Correct 133 ms 72696 KB Output is correct
77 Correct 132 ms 73548 KB Output is correct
78 Correct 135 ms 73848 KB Output is correct
79 Correct 127 ms 79024 KB Output is correct
80 Correct 105 ms 78056 KB Output is correct
81 Correct 158 ms 71632 KB Output is correct
82 Correct 164 ms 71688 KB Output is correct
83 Correct 148 ms 75252 KB Output is correct
84 Correct 126 ms 73652 KB Output is correct
85 Correct 161 ms 71696 KB Output is correct
86 Correct 168 ms 79048 KB Output is correct
87 Correct 151 ms 79044 KB Output is correct
88 Correct 125 ms 71596 KB Output is correct
89 Correct 145 ms 71112 KB Output is correct
90 Correct 178 ms 73184 KB Output is correct
91 Correct 174 ms 72956 KB Output is correct
92 Correct 179 ms 73384 KB Output is correct
93 Correct 171 ms 74432 KB Output is correct
94 Correct 159 ms 73852 KB Output is correct
95 Correct 113 ms 73632 KB Output is correct
96 Correct 114 ms 77484 KB Output is correct
97 Correct 112 ms 63740 KB Output is correct
98 Correct 160 ms 72912 KB Output is correct
99 Correct 134 ms 71104 KB Output is correct
100 Correct 60 ms 53896 KB Output is correct
101 Correct 179 ms 72868 KB Output is correct
102 Correct 164 ms 70980 KB Output is correct
103 Correct 189 ms 70976 KB Output is correct
104 Correct 190 ms 72876 KB Output is correct