Submission #1691806
Source Code Expand
#include<bits/stdc++.h> #define N 100005 using namespace std; int n,m,sm[N],tg[N],sz[N],fa[N]; int to[N*2],fst[N],nxt[N*2],l; void biu() { puts("-1"); exit(0); } void link(int x,int y) { to[++l]=y;nxt[l]=fst[x];fst[x]=l; to[++l]=x;nxt[l]=fst[y];fst[y]=l; } void dfs(int x) { sm[x]=tg[x]=tg[fa[x]]^1; sz[x]=1; for (int i=fst[x];i;i=nxt[i]) if (to[i]!=fa[x]) { fa[to[i]]=x; dfs(to[i]); sm[x]+=sm[to[i]]; sz[x]+=sz[to[i]]; } } int main() { scanf("%d%d",&n,&m); for (int i=1;i<=m;i++) { int x,y; scanf("%d%d",&x,&y); link(x,y); } if (m==n-1) { dfs(1); if (sm[1]*2!=n) biu(); int Ans=0; for (int i=2;i<=n;i++) Ans+=abs(sm[i]*2-sz[i]); printf("%d\n",Ans); } else { } }
Submission Info
Submission Time | |
---|---|
Task | F - Namori |
User | miaom |
Language | C++14 (GCC 5.4.1) |
Score | 1500 |
Code Size | 769 Byte |
Status | WA |
Exec Time | 29 ms |
Memory | 6784 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:31:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ ./Main.cpp:35:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^
Judge Result
Set Name | Sample | Subtask1 | All | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1500 / 1500 | 0 / 700 | ||||||||||
Status |
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Set Name | Test Cases |
---|---|
Sample | 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt |
Subtask1 | 0_00.txt, 0_01.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt |
All | 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 2_00.txt, 2_01.txt, 2_02.txt, 2_03.txt, 2_04.txt, 2_05.txt, 2_06.txt, 2_07.txt, 2_08.txt, 2_09.txt, 2_10.txt, 2_11.txt, 2_12.txt, 2_13.txt, 2_14.txt, 2_15.txt, 2_16.txt, 2_17.txt, 2_18.txt, 2_19.txt, 2_20.txt, 2_21.txt, 2_22.txt, 2_23.txt, 2_24.txt, 2_25.txt, 2_26.txt, 2_27.txt, 2_28.txt, 2_29.txt, 2_30.txt, 2_31.txt, 2_32.txt, 2_33.txt, 2_34.txt, 2_35.txt, 2_36.txt, 2_37.txt, 2_38.txt, 2_39.txt, 2_40.txt, 2_41.txt, 2_42.txt, 2_43.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_00.txt | AC | 1 ms | 256 KB |
0_01.txt | AC | 1 ms | 256 KB |
0_02.txt | WA | 1 ms | 256 KB |
0_03.txt | WA | 1 ms | 256 KB |
1_00.txt | AC | 1 ms | 256 KB |
1_01.txt | AC | 29 ms | 6784 KB |
1_02.txt | AC | 24 ms | 4608 KB |
1_03.txt | AC | 21 ms | 3712 KB |
1_04.txt | AC | 27 ms | 5120 KB |
1_05.txt | AC | 27 ms | 4992 KB |
1_06.txt | AC | 27 ms | 4992 KB |
1_07.txt | AC | 27 ms | 4608 KB |
1_08.txt | AC | 28 ms | 5248 KB |
1_09.txt | AC | 25 ms | 3712 KB |
1_10.txt | AC | 24 ms | 3712 KB |
1_11.txt | AC | 25 ms | 3712 KB |
1_12.txt | AC | 25 ms | 3712 KB |
1_13.txt | AC | 26 ms | 3968 KB |
1_14.txt | AC | 25 ms | 3840 KB |
1_15.txt | AC | 25 ms | 3712 KB |
1_16.txt | AC | 25 ms | 3712 KB |
1_17.txt | AC | 25 ms | 3712 KB |
2_00.txt | WA | 1 ms | 256 KB |
2_01.txt | WA | 19 ms | 2176 KB |
2_02.txt | WA | 19 ms | 2176 KB |
2_03.txt | WA | 19 ms | 2176 KB |
2_04.txt | WA | 19 ms | 2176 KB |
2_05.txt | WA | 19 ms | 2176 KB |
2_06.txt | WA | 19 ms | 2176 KB |
2_07.txt | WA | 19 ms | 2176 KB |
2_08.txt | WA | 19 ms | 2176 KB |
2_09.txt | WA | 19 ms | 2176 KB |
2_10.txt | WA | 19 ms | 2176 KB |
2_11.txt | WA | 19 ms | 2176 KB |
2_12.txt | WA | 19 ms | 2176 KB |
2_13.txt | WA | 19 ms | 2176 KB |
2_14.txt | WA | 19 ms | 2176 KB |
2_15.txt | WA | 19 ms | 2176 KB |
2_16.txt | WA | 19 ms | 2176 KB |
2_17.txt | WA | 19 ms | 2176 KB |
2_18.txt | WA | 1 ms | 256 KB |
2_19.txt | WA | 19 ms | 2176 KB |
2_20.txt | WA | 19 ms | 2176 KB |
2_21.txt | WA | 19 ms | 2176 KB |
2_22.txt | WA | 19 ms | 2176 KB |
2_23.txt | WA | 19 ms | 2176 KB |
2_24.txt | WA | 19 ms | 2176 KB |
2_25.txt | WA | 19 ms | 2176 KB |
2_26.txt | WA | 19 ms | 2176 KB |
2_27.txt | WA | 19 ms | 2176 KB |
2_28.txt | WA | 19 ms | 2176 KB |
2_29.txt | WA | 19 ms | 2176 KB |
2_30.txt | WA | 19 ms | 2176 KB |
2_31.txt | WA | 19 ms | 2176 KB |
2_32.txt | WA | 19 ms | 2176 KB |
2_33.txt | WA | 19 ms | 2176 KB |
2_34.txt | WA | 19 ms | 2176 KB |
2_35.txt | WA | 19 ms | 2176 KB |
2_36.txt | WA | 19 ms | 2176 KB |
2_37.txt | WA | 19 ms | 2176 KB |
2_38.txt | WA | 18 ms | 2176 KB |
2_39.txt | WA | 19 ms | 2176 KB |
2_40.txt | WA | 19 ms | 2176 KB |
2_41.txt | WA | 20 ms | 2176 KB |
2_42.txt | WA | 19 ms | 2176 KB |
2_43.txt | WA | 18 ms | 2176 KB |