답안 #50130 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
50130	2018-06-07T16:56:32 Z	top34051	낙하산 고리들 (IOI12_rings)	C++17	55 / 100	4000 ms	94816 KB

rings

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

const int maxn = 1e6 + 5;

int n;
vector<int> way[maxn];
vector<int> deg[10];
int cut[maxn];
int sz, cy, vis[maxn];
stack<int> st;
int ok[maxn];

void Init(int _n) {
    n = _n;
}

void cycle(int u, int last, int ban) {
    if(vis[u]) {
        while(!st.empty()) {
            int v = st.top(); st.pop();
            sz++;
            if(v==u) break;
        }
        cy++;
        return ;
    }
    vis[u] = 1; st.push(u);
    for(auto v : way[u]) {
        if(v!=ban && v!=last && vis[v]<2) {
            cycle(v,u,ban);
        }
    }
    vis[u] = 2;
    if(!st.empty()) st.pop();
}

int check(int u) {
    memset(cut,0,sizeof(cut));
    for(auto v : way[u]) cut[v]++;
    for(int i=1;i<=n;i++) if(i!=u && way[i].size()-cut[i]>2) return 0;
    sz = cy = 0; memset(vis,0,sizeof(vis));
    for(int i=1;i<=n;i++) if(i!=u && !vis[i]) cycle(i,0,u);
    return cy==0;
}

int CountCritical() {
    for(int i=0;i<=4;i++) deg[i].clear();
    for(int x=1;x<=n;x++) deg[min(4,(int)way[x].size())].push_back(x);
    if(deg[4].size()) {
        memset(ok,0,sizeof(ok));
        if(deg[4].size()<=1) {
            for(auto u : deg[4]) if(!ok[u] && check(u)) ok[u] = 1;
        }
        int res = 0;
        for(int x=1;x<=n;x++) res += ok[x];
        return res;
    }
    if(deg[3].size()) {
        memset(ok,0,sizeof(ok));
        int u = deg[3][0];
        if(!ok[u] && check(u)) ok[u] = 1;
        for(auto v : way[u]) if(!ok[v] && check(v)) ok[v] = 1;
        int res = 0;
        for(int x=1;x<=n;x++) res += ok[x];
        return res;
    }
    sz = cy = 0; memset(vis,0,sizeof(vis));
    for(int i=1;i<=n;i++) if(!vis[i]) cycle(i,0,0);
    if(cy==0) return n;
    else if(cy==1) return sz;
    else return 0;
}

void Link(int x, int y) {
    x++; y++;
    way[x].push_back(y); way[y].push_back(x);
}

Subtask #1
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	27768 KB	Output is correct
2	Correct	32 ms	35916 KB	Output is correct
3	Correct	35 ms	35916 KB	Output is correct
4	Correct	26 ms	35916 KB	Output is correct
5	Correct	27 ms	35916 KB	Output is correct
6	Correct	28 ms	35916 KB	Output is correct
7	Correct	29 ms	35916 KB	Output is correct
8	Correct	27 ms	35916 KB	Output is correct
9	Correct	34 ms	35984 KB	Output is correct
10	Correct	34 ms	35988 KB	Output is correct

Subtask #2
17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	506 ms	46600 KB	Output is correct
2	Correct	961 ms	64444 KB	Output is correct
3	Correct	926 ms	64444 KB	Output is correct
4	Correct	1215 ms	64444 KB	Output is correct
5	Correct	1273 ms	64616 KB	Output is correct
6	Correct	1238 ms	94816 KB	Output is correct
7	Correct	831 ms	94816 KB	Output is correct
8	Correct	1407 ms	94816 KB	Output is correct
9	Correct	1282 ms	94816 KB	Output is correct
10	Correct	971 ms	94816 KB	Output is correct

Subtask #3
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	27768 KB	Output is correct
2	Correct	32 ms	35916 KB	Output is correct
3	Correct	35 ms	35916 KB	Output is correct
4	Correct	26 ms	35916 KB	Output is correct
5	Correct	27 ms	35916 KB	Output is correct
6	Correct	28 ms	35916 KB	Output is correct
7	Correct	29 ms	35916 KB	Output is correct
8	Correct	27 ms	35916 KB	Output is correct
9	Correct	34 ms	35984 KB	Output is correct
10	Correct	34 ms	35988 KB	Output is correct
11	Correct	105 ms	94816 KB	Output is correct
12	Correct	106 ms	94816 KB	Output is correct
13	Correct	193 ms	94816 KB	Output is correct
14	Correct	113 ms	94816 KB	Output is correct
15	Correct	139 ms	94816 KB	Output is correct
16	Correct	86 ms	94816 KB	Output is correct
17	Correct	149 ms	94816 KB	Output is correct
18	Correct	79 ms	94816 KB	Output is correct
19	Correct	87 ms	94816 KB	Output is correct
20	Correct	151 ms	94816 KB	Output is correct

Subtask #4
0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	27768 KB	Output is correct
2	Correct	32 ms	35916 KB	Output is correct
3	Correct	35 ms	35916 KB	Output is correct
4	Correct	26 ms	35916 KB	Output is correct
5	Correct	27 ms	35916 KB	Output is correct
6	Correct	28 ms	35916 KB	Output is correct
7	Correct	29 ms	35916 KB	Output is correct
8	Correct	27 ms	35916 KB	Output is correct
9	Correct	34 ms	35984 KB	Output is correct
10	Correct	34 ms	35988 KB	Output is correct
11	Correct	105 ms	94816 KB	Output is correct
12	Correct	106 ms	94816 KB	Output is correct
13	Correct	193 ms	94816 KB	Output is correct
14	Correct	113 ms	94816 KB	Output is correct
15	Correct	139 ms	94816 KB	Output is correct
16	Correct	86 ms	94816 KB	Output is correct
17	Correct	149 ms	94816 KB	Output is correct
18	Correct	79 ms	94816 KB	Output is correct
19	Correct	87 ms	94816 KB	Output is correct
20	Correct	151 ms	94816 KB	Output is correct
21	Execution timed out	4038 ms	94816 KB	Time limit exceeded
22	Halted	0 ms	0 KB	-

Subtask #5
0 / 31.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	27768 KB	Output is correct
2	Correct	32 ms	35916 KB	Output is correct
3	Correct	35 ms	35916 KB	Output is correct
4	Correct	26 ms	35916 KB	Output is correct
5	Correct	27 ms	35916 KB	Output is correct
6	Correct	28 ms	35916 KB	Output is correct
7	Correct	29 ms	35916 KB	Output is correct
8	Correct	27 ms	35916 KB	Output is correct
9	Correct	34 ms	35984 KB	Output is correct
10	Correct	34 ms	35988 KB	Output is correct
11	Correct	506 ms	46600 KB	Output is correct
12	Correct	961 ms	64444 KB	Output is correct
13	Correct	926 ms	64444 KB	Output is correct
14	Correct	1215 ms	64444 KB	Output is correct
15	Correct	1273 ms	64616 KB	Output is correct
16	Correct	1238 ms	94816 KB	Output is correct
17	Correct	831 ms	94816 KB	Output is correct
18	Correct	1407 ms	94816 KB	Output is correct
19	Correct	1282 ms	94816 KB	Output is correct
20	Correct	971 ms	94816 KB	Output is correct
21	Correct	105 ms	94816 KB	Output is correct
22	Correct	106 ms	94816 KB	Output is correct
23	Correct	193 ms	94816 KB	Output is correct
24	Correct	113 ms	94816 KB	Output is correct
25	Correct	139 ms	94816 KB	Output is correct
26	Correct	86 ms	94816 KB	Output is correct
27	Correct	149 ms	94816 KB	Output is correct
28	Correct	79 ms	94816 KB	Output is correct
29	Correct	87 ms	94816 KB	Output is correct
30	Correct	151 ms	94816 KB	Output is correct
31	Execution timed out	4038 ms	94816 KB	Time limit exceeded
32	Halted	0 ms	0 KB	-

답안 #50130

Compilation message

Subtask #1 20.0 / 20.0

Subtask #2 17.0 / 17.0

Subtask #3 18.0 / 18.0

Subtask #4 0 / 14.0

Subtask #5 0 / 31.0

Subtask #1
20.0 / 20.0

Subtask #2
17.0 / 17.0

Subtask #3
18.0 / 18.0

Subtask #4
0 / 14.0

Subtask #5
0 / 31.0