| Task: | Tunnels |
| Sender: | iiiiikriiiii |
| Submission time: | 2017-01-22 10:48:32 +0200 |
| Language: | C++ |
| Status: | READY |
| Result: | 0 |
| group | verdict | score |
|---|---|---|
| #1 | WRONG ANSWER | 0 |
| #2 | WRONG ANSWER | 0 |
| #3 | WRONG ANSWER | 0 |
| test | verdict | time | group | |
|---|---|---|---|---|
| #1 | ACCEPTED | 0.03 s | 1 | details |
| #2 | WRONG ANSWER | 0.04 s | 1 | details |
| #3 | WRONG ANSWER | 0.04 s | 1 | details |
| #4 | WRONG ANSWER | 0.04 s | 1 | details |
| #5 | WRONG ANSWER | 0.04 s | 1 | details |
| #6 | WRONG ANSWER | 0.04 s | 2 | details |
| #7 | WRONG ANSWER | 0.04 s | 2 | details |
| #8 | WRONG ANSWER | 0.05 s | 2 | details |
| #9 | WRONG ANSWER | 0.04 s | 2 | details |
| #10 | WRONG ANSWER | 0.05 s | 2 | details |
| #11 | WRONG ANSWER | 0.09 s | 3 | details |
| #12 | WRONG ANSWER | 0.09 s | 3 | details |
| #13 | WRONG ANSWER | 0.08 s | 3 | details |
| #14 | WRONG ANSWER | 0.05 s | 3 | details |
| #15 | WRONG ANSWER | 0.04 s | 3 | details |
Compiler report
input/code.cpp: In function 'int main()':
input/code.cpp:13:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf ("%d %d",&N,&M);
^
input/code.cpp:16:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
int x,y; scanf ("%d %d",&x,&y);
^Code
#include <stdio.h>
int N,M,I[100010],O[100010],P[100010],C[100010];
int find(int x)
{
if (P[x] != x) P[x] = find(P[x]);
return P[x];
}
int main()
{
scanf ("%d %d",&N,&M);
for (int i=1;i<=N;i++) P[i] = i;
for (int i=1;i<=M;i++){
int x,y; scanf ("%d %d",&x,&y);
I[x]++; O[y]++;
P[find(x)] = find(y);
}
for (int i=1;i<=N;i++) if (I[i] > O[i]) C[find(i)] += I[i] - O[i];
int ans = 0;
for (int i=1;i<=N;i++) if (i == find(i)){
if (C[i] == 0) ans++;
else ans += C[i];
}
printf ("%d\n",ans);
return 0;
}Test details
Test 1
Group: 1
Verdict: ACCEPTED
| input |
|---|
| 10 20 4 5 6 4 5 1 5 9 ... |
| correct output |
|---|
| 11 |
| user output |
|---|
| 11 |
Test 2
Group: 1
Verdict: WRONG ANSWER
| input |
|---|
| 10 10 7 3 5 2 9 7 1 5 ... |
| correct output |
|---|
| 5 |
| user output |
|---|
| 6 |
Test 3
Group: 1
Verdict: WRONG ANSWER
| input |
|---|
| 10 5 5 7 3 8 5 8 3 7 ... |
| correct output |
|---|
| 4 |
| user output |
|---|
| 9 |
Test 4
Group: 1
Verdict: WRONG ANSWER
| input |
|---|
| 10 4 9 1 6 8 7 1 5 7 |
| correct output |
|---|
| 3 |
| user output |
|---|
| 7 |
Test 5
Group: 1
Verdict: WRONG ANSWER
| input |
|---|
| 10 2 10 6 2 1 |
| correct output |
|---|
| 2 |
| user output |
|---|
| 8 |
Test 6
Group: 2
Verdict: WRONG ANSWER
| input |
|---|
| 100 200 24 40 25 6 36 93 92 90 ... |
| correct output |
|---|
| 97 |
| user output |
|---|
| 102 |
Test 7
Group: 2
Verdict: WRONG ANSWER
| input |
|---|
| 100 100 98 37 91 37 60 92 46 27 ... |
| correct output |
|---|
| 60 |
| user output |
|---|
| 73 |
Test 8
Group: 2
Verdict: WRONG ANSWER
| input |
|---|
| 100 50 74 95 53 72 69 85 14 13 ... |
| correct output |
|---|
| 34 |
| user output |
|---|
| 76 |
Test 9
Group: 2
Verdict: WRONG ANSWER
| input |
|---|
| 100 40 28 76 10 81 13 52 46 83 ... |
| correct output |
|---|
| 29 |
| user output |
|---|
| 79 |
Test 10
Group: 2
Verdict: WRONG ANSWER
| input |
|---|
| 100 20 27 35 72 92 56 4 64 80 ... |
| correct output |
|---|
| 18 |
| user output |
|---|
| 81 |
Test 11
Group: 3
Verdict: WRONG ANSWER
| input |
|---|
| 100000 200000 89244 59358 22943 56710 63331 89437 56581 38400 ... |
| correct output |
|---|
| 102510 |
| user output |
|---|
| 107130 |
Test 12
Group: 3
Verdict: WRONG ANSWER
| input |
|---|
| 100000 100000 21701 85599 61542 21474 38081 29362 46316 64038 ... |
| correct output |
|---|
| 60593 |
| user output |
|---|
| 79082 |
Test 13
Group: 3
Verdict: WRONG ANSWER
| input |
|---|
| 100000 50000 86469 4833 16351 35505 59315 33011 95464 16985 ... |
| correct output |
|---|
| 35933 |
| user output |
|---|
| 76382 |
Test 14
Group: 3
Verdict: WRONG ANSWER
| input |
|---|
| 100000 40000 5392 23534 63204 45619 74330 25925 59678 88427 ... |
| correct output |
|---|
| 30074 |
| user output |
|---|
| 77922 |
Test 15
Group: 3
Verdict: WRONG ANSWER
| input |
|---|
| 100000 20000 80156 16531 71753 77661 7028 33389 17168 646 ... |
| correct output |
|---|
| 16882 |
| user output |
|---|
| 85037 |