Submission #872003
Source Code Expand
#include<bits/stdc++.h> #define N 100100 using namespace std; vector<int> g[N]; int deg[N],val[N],tv[N]; int id[N],cnt; bool del[N]; int main(){ long long ans=0; int n,m,x,y; scanf("%d%d",&n,&m); for(int i=0;i<m;i++){ scanf("%d%d",&x,&y); g[x].push_back(y); g[y].push_back(x); deg[x]++; deg[y]++; } queue<int> q; for(int i=1;i<=n;i++){ if(deg[i]==1) q.push(i); val[i]=1; } while(!q.empty()){ int u=q.front(); q.pop(); if(deg[u]!=1){ continue; } del[u]=true; ans+=abs(val[u]); for(int i=0;i<g[u].size();i++){ int v=g[u][i]; if(del[v]) continue; val[v]-=val[u]; if(--deg[v]==1) q.push(v); } } for(int i=1;i<=n;i++){ if(!del[i]){ while(1){ del[i]=true; id[cnt++]=i; int nxt=-1; for(int j=0;j<g[i].size();j++){ if(del[g[i][j]]) continue; nxt=g[i][j]; break; } if(nxt<0) break; i=nxt; } break; } } if(cnt==1){ if(val[id[0]]) puts("-1"); else printf("%lld\n",ans); } else if(cnt&1){ long long tmp=0; for(int i=0;i<cnt;i++){ tmp+=val[id[i]]; } if(tmp&1) puts("-1"); else{ tmp>>=1; for(int i=1;i<cnt;i+=2){ tmp-=val[id[i]]; } for(int i=0;i<cnt;i++){ ans+=abs(tmp); tmp=val[id[i]]-tmp; } printf("%lld\n",ans); } } else{ long long tmp=0; for(int i=0;i<cnt;i++){ if(i&1) tv[i]=-tmp; else tv[i]=tmp; tmp=val[id[i]]-tmp; } if(tmp) puts("-1"); else{ sort(tv,tv+cnt); for(int i=0;i<cnt-1-i;i++){ ans+=tv[cnt-1-i]-tv[i]; } printf("%lld\n",ans); } } return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Namori |
User | aaaaajack |
Language | C++14 (GCC 5.4.1) |
Score | 2200 |
Code Size | 1644 Byte |
Status | AC |
Exec Time | 92 ms |
Memory | 7424 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:11:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ ./Main.cpp:13:22: 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 | 700 / 700 | ||||||
Status |
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Set Name | Test Cases |
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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 | 8 ms | 2560 KB |
0_01.txt | AC | 8 ms | 2560 KB |
0_02.txt | AC | 8 ms | 2560 KB |
0_03.txt | AC | 8 ms | 2560 KB |
1_00.txt | AC | 8 ms | 2560 KB |
1_01.txt | AC | 81 ms | 6656 KB |
1_02.txt | AC | 73 ms | 7040 KB |
1_03.txt | AC | 65 ms | 7416 KB |
1_04.txt | AC | 82 ms | 6912 KB |
1_05.txt | AC | 83 ms | 6784 KB |
1_06.txt | AC | 84 ms | 6784 KB |
1_07.txt | AC | 80 ms | 6912 KB |
1_08.txt | AC | 80 ms | 6784 KB |
1_09.txt | AC | 74 ms | 7296 KB |
1_10.txt | AC | 77 ms | 7040 KB |
1_11.txt | AC | 80 ms | 6912 KB |
1_12.txt | AC | 81 ms | 6784 KB |
1_13.txt | AC | 83 ms | 6784 KB |
1_14.txt | AC | 88 ms | 6784 KB |
1_15.txt | AC | 83 ms | 6784 KB |
1_16.txt | AC | 84 ms | 6784 KB |
1_17.txt | AC | 83 ms | 6784 KB |
2_00.txt | AC | 8 ms | 2560 KB |
2_01.txt | AC | 85 ms | 7424 KB |
2_02.txt | AC | 74 ms | 7424 KB |
2_03.txt | AC | 64 ms | 7416 KB |
2_04.txt | AC | 88 ms | 7296 KB |
2_05.txt | AC | 86 ms | 7168 KB |
2_06.txt | AC | 87 ms | 7168 KB |
2_07.txt | AC | 84 ms | 7296 KB |
2_08.txt | AC | 83 ms | 7168 KB |
2_09.txt | AC | 77 ms | 7168 KB |
2_10.txt | AC | 79 ms | 7040 KB |
2_11.txt | AC | 82 ms | 6912 KB |
2_12.txt | AC | 83 ms | 6784 KB |
2_13.txt | AC | 83 ms | 7168 KB |
2_14.txt | AC | 87 ms | 6868 KB |
2_15.txt | AC | 82 ms | 6784 KB |
2_16.txt | AC | 81 ms | 6784 KB |
2_17.txt | AC | 84 ms | 6784 KB |
2_18.txt | AC | 9 ms | 2560 KB |
2_19.txt | AC | 74 ms | 7164 KB |
2_20.txt | AC | 64 ms | 7416 KB |
2_21.txt | AC | 82 ms | 7424 KB |
2_22.txt | AC | 80 ms | 7168 KB |
2_23.txt | AC | 85 ms | 7168 KB |
2_24.txt | AC | 81 ms | 6912 KB |
2_25.txt | AC | 79 ms | 7296 KB |
2_26.txt | AC | 81 ms | 7040 KB |
2_27.txt | AC | 80 ms | 7296 KB |
2_28.txt | AC | 87 ms | 7040 KB |
2_29.txt | AC | 87 ms | 7040 KB |
2_30.txt | AC | 86 ms | 6784 KB |
2_31.txt | AC | 92 ms | 6912 KB |
2_32.txt | AC | 85 ms | 6784 KB |
2_33.txt | AC | 82 ms | 6784 KB |
2_34.txt | AC | 82 ms | 6784 KB |
2_35.txt | AC | 83 ms | 6784 KB |
2_36.txt | AC | 68 ms | 7416 KB |
2_37.txt | AC | 63 ms | 7416 KB |
2_38.txt | AC | 62 ms | 7416 KB |
2_39.txt | AC | 63 ms | 7416 KB |
2_40.txt | AC | 63 ms | 7416 KB |
2_41.txt | AC | 65 ms | 7416 KB |
2_42.txt | AC | 66 ms | 7416 KB |
2_43.txt | AC | 63 ms | 7416 KB |