Submission #869173
Source Code Expand
#include <bits/stdc++.h> using namespace std; typedef signed long long ll; #undef _P #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) //------------------------------------------------------- int N,M; set<int> E[101010]; ll sum; int D[101010],RD,SP[101010]; int U,V; int dfs(int cur,int pre,int type) { int ret=type+SP[cur]; FORR(r,E[cur]) if(r!=pre) ret += dfs(r,cur,-type); sum += abs(ret); return ret; } void dfs2(int cur,int pre,int d) { D[cur]=d; FORR(r,E[cur]) if(r!=pre) { if(D[r]>=0) { if(RD==0) U=cur, V=r, RD=d+1-D[r]; } else dfs2(r,cur,d+1); } } void solve() { int i,j,k,l,r,x,y; string s; cin>>N>>M; FOR(i,M) { cin>>x>>y; E[x-1].insert(y-1); E[y-1].insert(x-1); } if(M==N-1) { x = dfs(0,-1,1); if(x!=0) sum=-1; } else { MINUS(D); dfs2(0,-1,0); E[U].erase(V); E[V].erase(U); if(RD%2==1) { x = dfs(U,-1,1); if(abs(x)%2==1) return _P("-1\n"); sum = abs(x)/2; SP[U]-=x/2; SP[V]-=x/2; dfs(U,-1,1); } else { x = dfs(U,-1,1); ll tsum=sum; if(x) return _P("-1\n"); ll L=-101010,R=101010; while(R-L>5) { int M1=(2*L+R)/3; int M2=(L+R*2)/3; sum=abs(M1); SP[U]=M1; SP[V]=-M1; dfs(U,-1,1); ll sum1=sum; sum=abs(M2); SP[U]=M2; SP[V]=-M2; dfs(U,-1,1); ll sum2=sum; if(sum1<sum2) R=M2; if(sum1>sum2) L=M1; if(sum1==sum2) L=M1,R=M2; } for(x=L;x<=R;x++) { sum=abs(x); SP[U]=x; SP[V]=-x; dfs(U,-1,1); tsum=min(tsum,sum); } sum=tsum; } } cout<<sum<<endl; } int main(int argc,char** argv){ string s;int i; if(argc==1) ios::sync_with_stdio(false), cin.tie(0); FOR(i,argc-1) s+=argv[i+1],s+='\n'; FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin); solve(); return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Namori |
User | kmjp |
Language | C++14 (GCC 5.4.1) |
Score | 2200 |
Code Size | 2131 Byte |
Status | AC |
Exec Time | 1202 ms |
Memory | 20992 KB |
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 | 11 ms | 4992 KB |
0_01.txt | AC | 11 ms | 4992 KB |
0_02.txt | AC | 14 ms | 5376 KB |
0_03.txt | AC | 12 ms | 5376 KB |
1_00.txt | AC | 11 ms | 4992 KB |
1_01.txt | AC | 136 ms | 20352 KB |
1_02.txt | AC | 132 ms | 16128 KB |
1_03.txt | AC | 132 ms | 14336 KB |
1_04.txt | AC | 125 ms | 17152 KB |
1_05.txt | AC | 117 ms | 16896 KB |
1_06.txt | AC | 109 ms | 16896 KB |
1_07.txt | AC | 134 ms | 16128 KB |
1_08.txt | AC | 111 ms | 17408 KB |
1_09.txt | AC | 114 ms | 14336 KB |
1_10.txt | AC | 131 ms | 14336 KB |
1_11.txt | AC | 104 ms | 14336 KB |
1_12.txt | AC | 100 ms | 14336 KB |
1_13.txt | AC | 129 ms | 14848 KB |
1_14.txt | AC | 109 ms | 14464 KB |
1_15.txt | AC | 106 ms | 14336 KB |
1_16.txt | AC | 124 ms | 14336 KB |
1_17.txt | AC | 112 ms | 14336 KB |
2_00.txt | AC | 12 ms | 5376 KB |
2_01.txt | AC | 1202 ms | 20992 KB |
2_02.txt | AC | 574 ms | 17920 KB |
2_03.txt | AC | 393 ms | 14720 KB |
2_04.txt | AC | 949 ms | 17920 KB |
2_05.txt | AC | 986 ms | 17920 KB |
2_06.txt | AC | 1072 ms | 17920 KB |
2_07.txt | AC | 985 ms | 17920 KB |
2_08.txt | AC | 1077 ms | 17920 KB |
2_09.txt | AC | 672 ms | 14848 KB |
2_10.txt | AC | 385 ms | 14848 KB |
2_11.txt | AC | 673 ms | 14848 KB |
2_12.txt | AC | 629 ms | 14848 KB |
2_13.txt | AC | 122 ms | 17536 KB |
2_14.txt | AC | 144 ms | 15104 KB |
2_15.txt | AC | 773 ms | 14848 KB |
2_16.txt | AC | 143 ms | 14848 KB |
2_17.txt | AC | 755 ms | 14848 KB |
2_18.txt | AC | 12 ms | 5376 KB |
2_19.txt | AC | 150 ms | 17920 KB |
2_20.txt | AC | 141 ms | 14720 KB |
2_21.txt | AC | 1181 ms | 20992 KB |
2_22.txt | AC | 136 ms | 17920 KB |
2_23.txt | AC | 139 ms | 17920 KB |
2_24.txt | AC | 193 ms | 17920 KB |
2_25.txt | AC | 173 ms | 17920 KB |
2_26.txt | AC | 137 ms | 17920 KB |
2_27.txt | AC | 118 ms | 14848 KB |
2_28.txt | AC | 162 ms | 14848 KB |
2_29.txt | AC | 144 ms | 14848 KB |
2_30.txt | AC | 118 ms | 14848 KB |
2_31.txt | AC | 149 ms | 16896 KB |
2_32.txt | AC | 128 ms | 14976 KB |
2_33.txt | AC | 124 ms | 14848 KB |
2_34.txt | AC | 140 ms | 14848 KB |
2_35.txt | AC | 140 ms | 14848 KB |
2_36.txt | AC | 549 ms | 14720 KB |
2_37.txt | AC | 528 ms | 14720 KB |
2_38.txt | AC | 570 ms | 14720 KB |
2_39.txt | AC | 569 ms | 14720 KB |
2_40.txt | AC | 570 ms | 14720 KB |
2_41.txt | AC | 581 ms | 14720 KB |
2_42.txt | AC | 588 ms | 14720 KB |
2_43.txt | AC | 554 ms | 14720 KB |