답안 #984560

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
984560	2024-05-16T18:43:17 Z	Ahmed57	Alternating Current (BOI18_alternating)	C++17	100 / 100	76 ms	16264 KB

alternating

#include <bits/stdc++.h>

using namespace std;
#define int long long

signed main(){
    ios_base::sync_with_stdio(false);cin.tie(0);
    int n,m;cin>>n>>m;
    int pref[n+2] = {0};
    vector<array<int,3>> v;
    vector<array<int,2>> rng[n+1];
    int dir[m+1] = {0};
    int ma = -1, lol = -1;
    int mi = 1e9;
    set<int> s;
    for(int i = 0;i<m;i++){
        int a,b;cin>>a>>b;
        if(a<=b){
            pref[a]++;
            pref[b+1]--;
        }else{
            pref[a]++;
            pref[1]++;
            pref[b+1]--;
            b+=n;
        }
        v.push_back({a,b,i});
        rng[a].push_back({b,i});
        s.insert(a);
    }    
    vector<int> roro;
    for(auto i:s){
        int ma = -1;
        int lol = 0;
        for(auto j:rng[i]){
            if(ma<j[0]){
                ma = j[0];
                lol = j[1];
            }
        }
        roro.push_back(lol);
    }
    for(int i = 2;i<=n;i++){
        pref[i]+=pref[i-1];
    }
    for(int i = 1;i<=n;i++){
        if(pref[i]<=1){
            cout<<"impossible\n";
            return 0;
        }
    }
    for(auto i:roro){
        for(int j = 0;j<m;j++)dir[j] = 0;
        int ind = v[i][0];
        int nah = v[i][1], fe = v[i][2];
        bool bad = 0;
        while(ind<v[i][0]+n){
            if(ind-1==nah){
                bad = 1;
                break;
            }
            if(nah==-1){
                bad = 1;
                break;
            }
            int er = nah;
            dir[fe] = 1;
            if(er>=v[i][0]+n){
                break;
            }
            while(ind<=er){
                ind++;
                for(auto j:rng[(ind-1)%n+1]){
                    if(nah<(j[0]>n?j[0]:(ind<=n?j[0]:j[0]+n))){
                        nah = (j[0]>n?j[0]:(ind<=n?j[0]:j[0]+n));
                        fe = j[1];
                    }
                }
                if(ind<=er&&pref[(ind-1)%n+1]==2)nah = -1;
            }
        }
        int npref[n+2];
        for(int j = 1;j<=n;j++){
            npref[j] = 0;
        }
        for(int j = 0;j<m;j++){
            if(dir[j])continue;
            if(v[j][1]>n){
                npref[v[j][0]]++;
                npref[1]++;
                npref[(v[j][1]-1)%n+2]--;
            }else{
                npref[v[j][0]]++;
                npref[v[j][1]+1]--;
            }
        }
        for(int j = 2;j<=n;j++)npref[j]+=npref[j-1];
        for(int j = 1;j<=n;j++){
            if(npref[j]==0){
                bad = 1;
                break;
            }
        }
        if(bad==0){
            for(int j = 0;j<m;j++){
                cout<<dir[j];
            }
            return 0;
        }
    }
    cout<<"impossible\n";
}

Compilation message

alternating.cpp: In function 'int main()':
alternating.cpp:13:9: warning: unused variable 'ma' [-Wunused-variable]
   13 |     int ma = -1, lol = -1;
      |         ^~
alternating.cpp:13:18: warning: unused variable 'lol' [-Wunused-variable]
   13 |     int ma = -1, lol = -1;
      |                  ^~~
alternating.cpp:14:9: warning: unused variable 'mi' [-Wunused-variable]
   14 |     int mi = 1e9;
      |         ^~

Subtask #1
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	356 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	420 KB	Output is correct
14	Correct	1 ms	600 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	344 KB	Output is correct
21	Correct	1 ms	516 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	344 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	1 ms	348 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	0 ms	348 KB	Output is correct
33	Correct	0 ms	348 KB	Output is correct
34	Correct	0 ms	348 KB	Output is correct
35	Correct	0 ms	348 KB	Output is correct
36	Correct	0 ms	348 KB	Output is correct
37	Correct	0 ms	348 KB	Output is correct
38	Correct	0 ms	348 KB	Output is correct
39	Correct	1 ms	348 KB	Output is correct
40	Correct	1 ms	416 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	356 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	420 KB	Output is correct
14	Correct	1 ms	600 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	344 KB	Output is correct
21	Correct	1 ms	516 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	344 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	1 ms	348 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	0 ms	348 KB	Output is correct
33	Correct	0 ms	348 KB	Output is correct
34	Correct	0 ms	348 KB	Output is correct
35	Correct	0 ms	348 KB	Output is correct
36	Correct	0 ms	348 KB	Output is correct
37	Correct	0 ms	348 KB	Output is correct
38	Correct	0 ms	348 KB	Output is correct
39	Correct	1 ms	348 KB	Output is correct
40	Correct	1 ms	416 KB	Output is correct
41	Correct	1 ms	348 KB	Output is correct
42	Correct	0 ms	348 KB	Output is correct
43	Correct	0 ms	348 KB	Output is correct
44	Correct	0 ms	348 KB	Output is correct
45	Correct	1 ms	348 KB	Output is correct
46	Correct	1 ms	348 KB	Output is correct
47	Correct	1 ms	348 KB	Output is correct
48	Correct	1 ms	344 KB	Output is correct
49	Correct	0 ms	344 KB	Output is correct
50	Correct	1 ms	592 KB	Output is correct
51	Correct	0 ms	348 KB	Output is correct
52	Correct	1 ms	348 KB	Output is correct
53	Correct	1 ms	348 KB	Output is correct
54	Correct	0 ms	348 KB	Output is correct
55	Correct	0 ms	348 KB	Output is correct
56	Correct	0 ms	348 KB	Output is correct
57	Correct	0 ms	348 KB	Output is correct
58	Correct	0 ms	348 KB	Output is correct
59	Correct	0 ms	344 KB	Output is correct
60	Correct	1 ms	344 KB	Output is correct
61	Correct	1 ms	348 KB	Output is correct
62	Correct	0 ms	344 KB	Output is correct
63	Correct	0 ms	348 KB	Output is correct
64	Correct	0 ms	348 KB	Output is correct
65	Correct	1 ms	348 KB	Output is correct
66	Correct	0 ms	348 KB	Output is correct
67	Correct	1 ms	344 KB	Output is correct
68	Correct	1 ms	344 KB	Output is correct
69	Correct	0 ms	348 KB	Output is correct

Subtask #3
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	356 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	420 KB	Output is correct
14	Correct	1 ms	600 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	344 KB	Output is correct
21	Correct	1 ms	516 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	344 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	1 ms	348 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	0 ms	348 KB	Output is correct
33	Correct	0 ms	348 KB	Output is correct
34	Correct	0 ms	348 KB	Output is correct
35	Correct	0 ms	348 KB	Output is correct
36	Correct	0 ms	348 KB	Output is correct
37	Correct	0 ms	348 KB	Output is correct
38	Correct	0 ms	348 KB	Output is correct
39	Correct	1 ms	348 KB	Output is correct
40	Correct	1 ms	416 KB	Output is correct
41	Correct	1 ms	348 KB	Output is correct
42	Correct	0 ms	348 KB	Output is correct
43	Correct	0 ms	348 KB	Output is correct
44	Correct	0 ms	348 KB	Output is correct
45	Correct	1 ms	348 KB	Output is correct
46	Correct	1 ms	348 KB	Output is correct
47	Correct	1 ms	348 KB	Output is correct
48	Correct	1 ms	344 KB	Output is correct
49	Correct	0 ms	344 KB	Output is correct
50	Correct	1 ms	592 KB	Output is correct
51	Correct	0 ms	348 KB	Output is correct
52	Correct	1 ms	348 KB	Output is correct
53	Correct	1 ms	348 KB	Output is correct
54	Correct	0 ms	348 KB	Output is correct
55	Correct	0 ms	348 KB	Output is correct
56	Correct	0 ms	348 KB	Output is correct
57	Correct	0 ms	348 KB	Output is correct
58	Correct	0 ms	348 KB	Output is correct
59	Correct	0 ms	344 KB	Output is correct
60	Correct	1 ms	344 KB	Output is correct
61	Correct	1 ms	348 KB	Output is correct
62	Correct	0 ms	344 KB	Output is correct
63	Correct	0 ms	348 KB	Output is correct
64	Correct	0 ms	348 KB	Output is correct
65	Correct	1 ms	348 KB	Output is correct
66	Correct	0 ms	348 KB	Output is correct
67	Correct	1 ms	344 KB	Output is correct
68	Correct	1 ms	344 KB	Output is correct
69	Correct	0 ms	348 KB	Output is correct
70	Correct	1 ms	348 KB	Output is correct
71	Correct	1 ms	604 KB	Output is correct
72	Correct	1 ms	348 KB	Output is correct
73	Correct	1 ms	348 KB	Output is correct
74	Correct	0 ms	348 KB	Output is correct
75	Correct	1 ms	352 KB	Output is correct
76	Correct	1 ms	592 KB	Output is correct
77	Correct	1 ms	348 KB	Output is correct
78	Correct	1 ms	348 KB	Output is correct
79	Correct	0 ms	348 KB	Output is correct
80	Correct	1 ms	348 KB	Output is correct
81	Correct	1 ms	348 KB	Output is correct
82	Correct	0 ms	348 KB	Output is correct
83	Correct	1 ms	348 KB	Output is correct
84	Correct	1 ms	604 KB	Output is correct
85	Correct	1 ms	348 KB	Output is correct
86	Correct	1 ms	348 KB	Output is correct
87	Correct	1 ms	348 KB	Output is correct
88	Correct	1 ms	348 KB	Output is correct
89	Correct	0 ms	348 KB	Output is correct
90	Correct	1 ms	348 KB	Output is correct
91	Correct	1 ms	348 KB	Output is correct
92	Correct	1 ms	348 KB	Output is correct
93	Correct	0 ms	348 KB	Output is correct
94	Correct	0 ms	348 KB	Output is correct
95	Correct	0 ms	348 KB	Output is correct
96	Correct	1 ms	600 KB	Output is correct
97	Correct	1 ms	344 KB	Output is correct
98	Correct	1 ms	348 KB	Output is correct

Subtask #4
19.0 / 19.0

#	결과	실행 시간	메모리	Grader output
1	Correct	21 ms	9244 KB	Output is correct
2	Correct	3 ms	4184 KB	Output is correct
3	Correct	18 ms	9744 KB	Output is correct
4	Correct	21 ms	10756 KB	Output is correct
5	Correct	55 ms	15876 KB	Output is correct
6	Correct	48 ms	14264 KB	Output is correct
7	Correct	59 ms	16264 KB	Output is correct
8	Correct	5 ms	4696 KB	Output is correct
9	Correct	4 ms	4188 KB	Output is correct
10	Correct	57 ms	15412 KB	Output is correct
11	Correct	53 ms	14084 KB	Output is correct
12	Correct	76 ms	16208 KB	Output is correct
13	Correct	2 ms	3420 KB	Output is correct
14	Correct	2 ms	3420 KB	Output is correct
15	Correct	49 ms	13896 KB	Output is correct
16	Correct	18 ms	9744 KB	Output is correct
17	Correct	62 ms	13664 KB	Output is correct
18	Correct	29 ms	7180 KB	Output is correct
19	Correct	4 ms	4184 KB	Output is correct
20	Correct	33 ms	13068 KB	Output is correct

Subtask #5
26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	356 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	420 KB	Output is correct
14	Correct	1 ms	600 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	344 KB	Output is correct
21	Correct	1 ms	516 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	344 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	1 ms	348 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	0 ms	348 KB	Output is correct
33	Correct	0 ms	348 KB	Output is correct
34	Correct	0 ms	348 KB	Output is correct
35	Correct	0 ms	348 KB	Output is correct
36	Correct	0 ms	348 KB	Output is correct
37	Correct	0 ms	348 KB	Output is correct
38	Correct	0 ms	348 KB	Output is correct
39	Correct	1 ms	348 KB	Output is correct
40	Correct	1 ms	416 KB	Output is correct
41	Correct	1 ms	348 KB	Output is correct
42	Correct	0 ms	348 KB	Output is correct
43	Correct	0 ms	348 KB	Output is correct
44	Correct	0 ms	348 KB	Output is correct
45	Correct	1 ms	348 KB	Output is correct
46	Correct	1 ms	348 KB	Output is correct
47	Correct	1 ms	348 KB	Output is correct
48	Correct	1 ms	344 KB	Output is correct
49	Correct	0 ms	344 KB	Output is correct
50	Correct	1 ms	592 KB	Output is correct
51	Correct	0 ms	348 KB	Output is correct
52	Correct	1 ms	348 KB	Output is correct
53	Correct	1 ms	348 KB	Output is correct
54	Correct	0 ms	348 KB	Output is correct
55	Correct	0 ms	348 KB	Output is correct
56	Correct	0 ms	348 KB	Output is correct
57	Correct	0 ms	348 KB	Output is correct
58	Correct	0 ms	348 KB	Output is correct
59	Correct	0 ms	344 KB	Output is correct
60	Correct	1 ms	344 KB	Output is correct
61	Correct	1 ms	348 KB	Output is correct
62	Correct	0 ms	344 KB	Output is correct
63	Correct	0 ms	348 KB	Output is correct
64	Correct	0 ms	348 KB	Output is correct
65	Correct	1 ms	348 KB	Output is correct
66	Correct	0 ms	348 KB	Output is correct
67	Correct	1 ms	344 KB	Output is correct
68	Correct	1 ms	344 KB	Output is correct
69	Correct	0 ms	348 KB	Output is correct
70	Correct	1 ms	348 KB	Output is correct
71	Correct	1 ms	604 KB	Output is correct
72	Correct	1 ms	348 KB	Output is correct
73	Correct	1 ms	348 KB	Output is correct
74	Correct	0 ms	348 KB	Output is correct
75	Correct	1 ms	352 KB	Output is correct
76	Correct	1 ms	592 KB	Output is correct
77	Correct	1 ms	348 KB	Output is correct
78	Correct	1 ms	348 KB	Output is correct
79	Correct	0 ms	348 KB	Output is correct
80	Correct	1 ms	348 KB	Output is correct
81	Correct	1 ms	348 KB	Output is correct
82	Correct	0 ms	348 KB	Output is correct
83	Correct	1 ms	348 KB	Output is correct
84	Correct	1 ms	604 KB	Output is correct
85	Correct	1 ms	348 KB	Output is correct
86	Correct	1 ms	348 KB	Output is correct
87	Correct	1 ms	348 KB	Output is correct
88	Correct	1 ms	348 KB	Output is correct
89	Correct	0 ms	348 KB	Output is correct
90	Correct	1 ms	348 KB	Output is correct
91	Correct	1 ms	348 KB	Output is correct
92	Correct	1 ms	348 KB	Output is correct
93	Correct	0 ms	348 KB	Output is correct
94	Correct	0 ms	348 KB	Output is correct
95	Correct	0 ms	348 KB	Output is correct
96	Correct	1 ms	600 KB	Output is correct
97	Correct	1 ms	344 KB	Output is correct
98	Correct	1 ms	348 KB	Output is correct
99	Correct	21 ms	9244 KB	Output is correct
100	Correct	3 ms	4184 KB	Output is correct
101	Correct	18 ms	9744 KB	Output is correct
102	Correct	21 ms	10756 KB	Output is correct
103	Correct	55 ms	15876 KB	Output is correct
104	Correct	48 ms	14264 KB	Output is correct
105	Correct	59 ms	16264 KB	Output is correct
106	Correct	5 ms	4696 KB	Output is correct
107	Correct	4 ms	4188 KB	Output is correct
108	Correct	57 ms	15412 KB	Output is correct
109	Correct	53 ms	14084 KB	Output is correct
110	Correct	76 ms	16208 KB	Output is correct
111	Correct	2 ms	3420 KB	Output is correct
112	Correct	2 ms	3420 KB	Output is correct
113	Correct	49 ms	13896 KB	Output is correct
114	Correct	18 ms	9744 KB	Output is correct
115	Correct	62 ms	13664 KB	Output is correct
116	Correct	29 ms	7180 KB	Output is correct
117	Correct	4 ms	4184 KB	Output is correct
118	Correct	33 ms	13068 KB	Output is correct
119	Correct	4 ms	4188 KB	Output is correct
120	Correct	59 ms	14708 KB	Output is correct
121	Correct	29 ms	10508 KB	Output is correct
122	Correct	0 ms	344 KB	Output is correct
123	Correct	4 ms	4184 KB	Output is correct
124	Correct	18 ms	8136 KB	Output is correct
125	Correct	17 ms	7952 KB	Output is correct
126	Correct	3 ms	4184 KB	Output is correct
127	Correct	7 ms	5516 KB	Output is correct
128	Correct	46 ms	14852 KB	Output is correct
129	Correct	34 ms	10756 KB	Output is correct
130	Correct	31 ms	11792 KB	Output is correct
131	Correct	5 ms	4184 KB	Output is correct
132	Correct	4 ms	4292 KB	Output is correct
133	Correct	52 ms	15268 KB	Output is correct
134	Correct	20 ms	7696 KB	Output is correct
135	Correct	3 ms	4184 KB	Output is correct
136	Correct	26 ms	10368 KB	Output is correct
137	Correct	39 ms	13064 KB	Output is correct
138	Correct	4 ms	4440 KB	Output is correct

답안 #984560

Compilation message

Subtask #1 13.0 / 13.0

Subtask #2 20.0 / 20.0

Subtask #3 22.0 / 22.0

Subtask #4 19.0 / 19.0

Subtask #5 26.0 / 26.0

Subtask #1
13.0 / 13.0

Subtask #2
20.0 / 20.0

Subtask #3
22.0 / 22.0

Subtask #4
19.0 / 19.0

Subtask #5
26.0 / 26.0