oj.uz

Submission #232064

# Submission time Handle Problem Language Result Execution time Memory
232064 2020-05-15T22:20:35 Z duality Making Friends on Joitter is Fun (JOI20_joitter2) C++11
100 / 100
 845 ms 50332 KB 
#define DEBUG 0

#include <bits/stdc++.h>
using namespace std;

#if DEBUG
// basic debugging macros
int __i__,__j__;
#define printLine(l) for(__i__=0;__i__<l;__i__++){cout<<"-";}cout<<endl
#define printLine2(l,c) for(__i__=0;__i__<l;__i__++){cout<<c;}cout<<endl
#define printVar(n) cout<<#n<<": "<<n<<endl
#define printArr(a,l) cout<<#a<<": ";for(__i__=0;__i__<l;__i__++){cout<<a[__i__]<<" ";}cout<<endl
#define print2dArr(a,r,c) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<a[__i__][__j__]<<" ";}cout<<endl;}
#define print2dArr2(a,r,c,l) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<setw(l)<<setfill(' ')<<a[__i__][__j__]<<" ";}cout<<endl;}

// advanced debugging class
// debug 1,2,'A',"test";
class _Debug {
    public:
        template<typename T>
        _Debug& operator,(T val) {
            cout << val << endl;
            return *this;
        }
};
#define debug _Debug(),
#else
#define printLine(l)
#define printLine2(l,c)
#define printVar(n)
#define printArr(a,l)
#define print2dArr(a,r,c)
#define print2dArr2(a,r,c,l)
#define debug
#endif

// define
#define MAX_VAL 999999999
#define MAX_VAL_2 999999999999999999LL
#define EPS 1e-6
#define mp make_pair
#define pb push_back

// typedef
typedef unsigned int UI;
typedef long long int LLI;
typedef unsigned long long int ULLI;
typedef unsigned short int US;
typedef pair<int,int> pii;
typedef pair<LLI,LLI> plli;
typedef vector<int> vi;
typedef vector<LLI> vlli;
typedef vector<pii> vpii;
typedef vector<plli> vplli;

// ---------- END OF TEMPLATE ----------

int parent[100000],size[100000];
int find(int n) {
    if (parent[n] != n) parent[n] = find(parent[n]);
    return parent[n];
}
set<pii> in[100000],out[100000];
LLI ans = 0;
int merge(int a,int b) {
    if (find(a) == find(b)) return 0;
    if (in[a].size()+out[a].size() > in[b].size()+out[b].size()) swap(a,b);
    ans -= (LLI) size[a]*in[a].size()+(LLI) size[b]*in[b].size();
    vi v;
    for (auto it = in[a].begin(); it != in[a].end(); it++) {
        out[it->first].erase(mp(a,it->second));
        if (it->first != b) {
            in[b].insert(*it),out[it->first].insert(mp(b,it->second));
            auto it2 = in[it->first].lower_bound(mp(b,0));
            if ((it2 != in[it->first].end()) && (it2->first == b)) v.pb(it->first);
        }
    }
    for (auto it = out[a].begin(); it != out[a].end(); it++) {
        in[it->first].erase(mp(a,it->second));
        if (it->first != b) {
            out[b].insert(*it),in[it->first].insert(mp(b,it->second));
            auto it2 = out[it->first].lower_bound(mp(b,0));
            if ((it2 != out[it->first].end()) && (it2->first == b)) v.pb(it->first);
        }
    }
    ans += (LLI) (size[a]+size[b])*in[b].size()+2LL*size[a]*size[b];
    in[a].clear(),out[a].clear(),parent[a] = b,size[b] += size[a];
    while (!v.empty()) merge(b,v.back()),v.pop_back();
    return 0;
}
int main() {
    int i;
    int N,M,A,B;
    scanf("%d %d",&N,&M);
    for (i = 0; i < N; i++) parent[i] = i,size[i] = 1;
    for (i = 0; i < M; i++) {
        scanf("%d %d",&A,&B);
        A--,B--;
        if ((find(A) != find(B)) && !in[find(B)].count(mp(find(A),A))) {
            in[find(B)].insert(mp(find(A),A)),out[find(A)].insert(mp(find(B),A));
            ans += size[find(B)];
            auto it = in[find(A)].lower_bound(mp(find(B),0));
            if ((it != in[find(A)].end()) && (it->first == find(B))) merge(find(A),find(B));
        }
        printf("%lld\n",ans);
    }

    return 0;
}

Compilation message

joitter2.cpp: In function 'int main()':
joitter2.cpp:94:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&N,&M);
     ~~~~~^~~~~~~~~~~~~~~
joitter2.cpp:97:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d",&A,&B);
         ~~~~~^~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9728 KB Output is correct
2 Correct 10 ms 9728 KB Output is correct
3 Correct 9 ms 9728 KB Output is correct
4 Correct 11 ms 9600 KB Output is correct
5 Correct 10 ms 9728 KB Output is correct
6 Correct 10 ms 9728 KB Output is correct
7 Correct 10 ms 9728 KB Output is correct
8 Correct 11 ms 9728 KB Output is correct
9 Correct 11 ms 9728 KB Output is correct
10 Correct 10 ms 9728 KB Output is correct
11 Correct 9 ms 9728 KB Output is correct
12 Correct 10 ms 9728 KB Output is correct
13 Correct 10 ms 9728 KB Output is correct
14 Correct 10 ms 9728 KB Output is correct
15 Correct 10 ms 9728 KB Output is correct
16 Correct 10 ms 9728 KB Output is correct
17 Correct 9 ms 9728 KB Output is correct
18 Correct 10 ms 9728 KB Output is correct
19 Correct 10 ms 9704 KB Output is correct
20 Correct 11 ms 9728 KB Output is correct
21 Correct 11 ms 9728 KB Output is correct
22 Correct 10 ms 9728 KB Output is correct
23 Correct 10 ms 9728 KB Output is correct
24 Correct 10 ms 9728 KB Output is correct
25 Correct 11 ms 9856 KB Output is correct
26 Correct 10 ms 9728 KB Output is correct
27 Correct 10 ms 9728 KB Output is correct
28 Correct 10 ms 9728 KB Output is correct
29 Correct 10 ms 9728 KB Output is correct
30 Correct 10 ms 9728 KB Output is correct
31 Correct 10 ms 9728 KB Output is correct
32 Correct 10 ms 9728 KB Output is correct
33 Correct 11 ms 9728 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9728 KB Output is correct
2 Correct 10 ms 9728 KB Output is correct
3 Correct 9 ms 9728 KB Output is correct
4 Correct 11 ms 9600 KB Output is correct
5 Correct 10 ms 9728 KB Output is correct
6 Correct 10 ms 9728 KB Output is correct
7 Correct 10 ms 9728 KB Output is correct
8 Correct 11 ms 9728 KB Output is correct
9 Correct 11 ms 9728 KB Output is correct
10 Correct 10 ms 9728 KB Output is correct
11 Correct 9 ms 9728 KB Output is correct
12 Correct 10 ms 9728 KB Output is correct
13 Correct 10 ms 9728 KB Output is correct
14 Correct 10 ms 9728 KB Output is correct
15 Correct 10 ms 9728 KB Output is correct
16 Correct 10 ms 9728 KB Output is correct
17 Correct 9 ms 9728 KB Output is correct
18 Correct 10 ms 9728 KB Output is correct
19 Correct 10 ms 9704 KB Output is correct
20 Correct 11 ms 9728 KB Output is correct
21 Correct 11 ms 9728 KB Output is correct
22 Correct 10 ms 9728 KB Output is correct
23 Correct 10 ms 9728 KB Output is correct
24 Correct 10 ms 9728 KB Output is correct
25 Correct 11 ms 9856 KB Output is correct
26 Correct 10 ms 9728 KB Output is correct
27 Correct 10 ms 9728 KB Output is correct
28 Correct 10 ms 9728 KB Output is correct
29 Correct 10 ms 9728 KB Output is correct
30 Correct 10 ms 9728 KB Output is correct
31 Correct 10 ms 9728 KB Output is correct
32 Correct 10 ms 9728 KB Output is correct
33 Correct 11 ms 9728 KB Output is correct
34 Correct 14 ms 9856 KB Output is correct
35 Correct 129 ms 15116 KB Output is correct
36 Correct 157 ms 17272 KB Output is correct
37 Correct 152 ms 17272 KB Output is correct
38 Correct 151 ms 17180 KB Output is correct
39 Correct 12 ms 9856 KB Output is correct
40 Correct 12 ms 9856 KB Output is correct
41 Correct 12 ms 9856 KB Output is correct
42 Correct 12 ms 9856 KB Output is correct
43 Correct 13 ms 9856 KB Output is correct
44 Correct 13 ms 9856 KB Output is correct
45 Correct 12 ms 9856 KB Output is correct
46 Correct 13 ms 9984 KB Output is correct
47 Correct 14 ms 9856 KB Output is correct
48 Correct 13 ms 9984 KB Output is correct
49 Correct 20 ms 10496 KB Output is correct
50 Correct 164 ms 17524 KB Output is correct
51 Correct 17 ms 10112 KB Output is correct
52 Correct 142 ms 16432 KB Output is correct
53 Correct 20 ms 10496 KB Output is correct
54 Correct 147 ms 16760 KB Output is correct
55 Correct 14 ms 10240 KB Output is correct
56 Correct 14 ms 10240 KB Output is correct
57 Correct 15 ms 10624 KB Output is correct
58 Correct 14 ms 10624 KB Output is correct
59 Correct 12 ms 9856 KB Output is correct
60 Correct 125 ms 14688 KB Output is correct
61 Correct 14 ms 9984 KB Output is correct
62 Correct 146 ms 17016 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9728 KB Output is correct
2 Correct 10 ms 9728 KB Output is correct
3 Correct 9 ms 9728 KB Output is correct
4 Correct 11 ms 9600 KB Output is correct
5 Correct 10 ms 9728 KB Output is correct
6 Correct 10 ms 9728 KB Output is correct
7 Correct 10 ms 9728 KB Output is correct
8 Correct 11 ms 9728 KB Output is correct
9 Correct 11 ms 9728 KB Output is correct
10 Correct 10 ms 9728 KB Output is correct
11 Correct 9 ms 9728 KB Output is correct
12 Correct 10 ms 9728 KB Output is correct
13 Correct 10 ms 9728 KB Output is correct
14 Correct 10 ms 9728 KB Output is correct
15 Correct 10 ms 9728 KB Output is correct
16 Correct 10 ms 9728 KB Output is correct
17 Correct 9 ms 9728 KB Output is correct
18 Correct 10 ms 9728 KB Output is correct
19 Correct 10 ms 9704 KB Output is correct
20 Correct 11 ms 9728 KB Output is correct
21 Correct 11 ms 9728 KB Output is correct
22 Correct 10 ms 9728 KB Output is correct
23 Correct 10 ms 9728 KB Output is correct
24 Correct 10 ms 9728 KB Output is correct
25 Correct 11 ms 9856 KB Output is correct
26 Correct 10 ms 9728 KB Output is correct
27 Correct 10 ms 9728 KB Output is correct
28 Correct 10 ms 9728 KB Output is correct
29 Correct 10 ms 9728 KB Output is correct
30 Correct 10 ms 9728 KB Output is correct
31 Correct 10 ms 9728 KB Output is correct
32 Correct 10 ms 9728 KB Output is correct
33 Correct 11 ms 9728 KB Output is correct
34 Correct 14 ms 9856 KB Output is correct
35 Correct 129 ms 15116 KB Output is correct
36 Correct 157 ms 17272 KB Output is correct
37 Correct 152 ms 17272 KB Output is correct
38 Correct 151 ms 17180 KB Output is correct
39 Correct 12 ms 9856 KB Output is correct
40 Correct 12 ms 9856 KB Output is correct
41 Correct 12 ms 9856 KB Output is correct
42 Correct 12 ms 9856 KB Output is correct
43 Correct 13 ms 9856 KB Output is correct
44 Correct 13 ms 9856 KB Output is correct
45 Correct 12 ms 9856 KB Output is correct
46 Correct 13 ms 9984 KB Output is correct
47 Correct 14 ms 9856 KB Output is correct
48 Correct 13 ms 9984 KB Output is correct
49 Correct 20 ms 10496 KB Output is correct
50 Correct 164 ms 17524 KB Output is correct
51 Correct 17 ms 10112 KB Output is correct
52 Correct 142 ms 16432 KB Output is correct
53 Correct 20 ms 10496 KB Output is correct
54 Correct 147 ms 16760 KB Output is correct
55 Correct 14 ms 10240 KB Output is correct
56 Correct 14 ms 10240 KB Output is correct
57 Correct 15 ms 10624 KB Output is correct
58 Correct 14 ms 10624 KB Output is correct
59 Correct 12 ms 9856 KB Output is correct
60 Correct 125 ms 14688 KB Output is correct
61 Correct 14 ms 9984 KB Output is correct
62 Correct 146 ms 17016 KB Output is correct
63 Correct 481 ms 44152 KB Output is correct
64 Correct 504 ms 44236 KB Output is correct
65 Correct 488 ms 44316 KB Output is correct
66 Correct 150 ms 14968 KB Output is correct
67 Correct 253 ms 18808 KB Output is correct
68 Correct 149 ms 14968 KB Output is correct
69 Correct 319 ms 19576 KB Output is correct
70 Correct 162 ms 14968 KB Output is correct
71 Correct 151 ms 14968 KB Output is correct
72 Correct 292 ms 19064 KB Output is correct
73 Correct 271 ms 18936 KB Output is correct
74 Correct 845 ms 28504 KB Output is correct
75 Correct 486 ms 24440 KB Output is correct
76 Correct 603 ms 27512 KB Output is correct
77 Correct 590 ms 27640 KB Output is correct
78 Correct 177 ms 18680 KB Output is correct
79 Correct 325 ms 22136 KB Output is correct
80 Correct 210 ms 18404 KB Output is correct
81 Correct 309 ms 21624 KB Output is correct
82 Correct 518 ms 32888 KB Output is correct
83 Correct 524 ms 32888 KB Output is correct
84 Correct 491 ms 50168 KB Output is correct
85 Correct 503 ms 50332 KB Output is correct
86 Correct 159 ms 14072 KB Output is correct
87 Correct 204 ms 16376 KB Output is correct
88 Correct 279 ms 18980 KB Output is correct
89 Correct 583 ms 26848 KB Output is correct