oj.uz

답안 #292658

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
292658 2020-09-07T11:30:58 Z b00n0rp Power Plant (JOI20_power) C++17
100 / 100
 225 ms 48760 KB 
// --------------------------------------------------<TEMPLATE>--------------------------------------------------
// --------------------<optimizations>--------------------
/*
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx,avx2,fma")
*/ 
// -------------------</optimizations>--------------------
 
// ---------------<Headers and namespaces>----------------
#include <bits/stdc++.h>
using namespace std;
 
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
*/
 
// ---------------</Headers and namespaces>---------------
 
// -----------------<Defines and typedefs>----------------
// typedef tree<int,null_type,less<int>,rb_tree_tag, 
// tree_order_statistics_node_update> indexed_set; // use less_equal for multiset
// order_of_key (val): returns the no. of values less than val
// find_by_order (k): returns the iterator to kth largest element.(0-based)
 
typedef long double LD;
typedef long long ll;
#define int ll
#define pb push_back
#define mp make_pair
#define REP(i,n) for (int i = 0; i < n; i++)
#define FOR(i,a,b) for (int i = a; i < b; i++)
#define REPD(i,n) for (int i = n-1; i >= 0; i--)
#define FORD(i,a,b) for (int i = a; i >= b; i--)
#define remax(a,b) a = max(a,b)
#define remin(a,b) a = min(a,b)
#define all(v) v.begin(),v.end()
typedef map<int,int> mii;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int,int> pii;
typedef vector<pii> vpii;
#define F first
#define S second
#define PQ(type) priority_queue<type>
#define PQD(type) priority_queue<type,vector<type>,greater<type> >
#define WL(t) while(t --)
#define SZ(x) ((int)(x).size())
#define runtime() ((double)clock() / CLOCKS_PER_SEC)
#define inrange(i,a,b) ((i>=min(a,b)) && (i<=max(a,b)))
 
/*
// -----<SCANF>-----
#define sfi(x) scanf("%d",&x);
#define sfi2(x,y) scanf("%d%d",&x,&y);
#define sfi3(x,y,z) scanf("%d%d%d",&x,&y,&z);
 
#define sfl(x) scanf("%lld",&x);
#define sfl2(x,y) scanf("%lld%lld",&x,&y);
#define sfl3(x,y,z) scanf("%lld%lld%lld",&x,&y,&z);
#define sfl4(x,y,z,x1) scanf("%lld%lld%lld%lld",&x,&y,&z,&x1);
#define sfl5(x,y,z,x1,y1) scanf("%lld%lld%lld%lld%lld",&x,&y,&z,&x1,&y1);
#define sfl6(x,y,z,x1,y1,z1) scanf("%lld%lld%lld%lld%lld%lld",&x,&y,&z,&x1,&y1,&z1);
 
#define sfs(x) scanf("%s",x);
#define sfs2(x,y) scanf("%s%s",x,y);
#define sfs3(x,y,z) scanf("%s%s%s",x,y,z);
// ----</SCANF>-----
 
// ----<PRINTF>-----
#define pfi(x) printf("%d\n",x);
#define pfi2(x,y) printf("%d %d\n",x,y);
#define pfi3(x,y,z) printf("%d %d %d\n",x,y,z);
 
#define pfl(x) printf("%lld\n",x);
#define pfl2(x,y) printf("%lld %lld\n",x,y);
#define pfl3(x,y,z) printf("%lld %lld %lld\n",x,y,z);
 
#define pfs(x) printf("%s\n",x);
#define pfs2(x,y) printf("%s %s\n",x,y);
#define pfs3(x,y,z) printf("%s %s %s\n",x,y,z);
 
#define pwe(x) printf("%lld ",x); // print without end
// ----</PRINTF>----
*/
#define FLSH fflush(stdout)
#define fileIO(name) \
    freopen(name".in", "r", stdin); \
    freopen(name".out", "w", stdout);
#define PRECISION(x) cout << fixed << setprecision(x); 
#define FAST_IO ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
 
// ----------------</Defines and typedefs>----------------
 
// -------------------<Debugging stuff>-------------------
#ifdef TRACE
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
template <typename Arg1>
void __f(const char* name, Arg1&& arg1){
    cout << name << " : " << arg1 << std::endl;
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args){
    const char* comma = strchr(names + 1, ',');cout.write(names, comma - names) << " : " << arg1<<" | ";__f(comma+1, args...);
}
#else
#define trace(...)
#endif
 
// ------------------</Debugging stuff>-------------------
 
// ------------------------<Consts>-----------------------
const int MAXN = 1000005;
const int SQRTN = 1003;
const int LOGN = 22;
const double PI=acos(-1);
 
#ifdef int
const int INF=1e16;
#else
const int INF=1e9;
#endif
 
const int MOD = 1000000007;
const int FMOD = 998244353;
const double eps = 1e-9;
// -----------------------</Consts>-----------------------
/*
// -------------------------<RNG>-------------------------
mt19937 RNG(chrono::steady_clock::now().time_since_epoch().count()); 
#define SHUF(v) shuffle(all(v), RNG);
// Use mt19937_64 for 64 bit random numbers.
 
// ------------------------</RNG>-------------------------
 
// ----------------------<MATH>---------------------------
template<typename T> T gcd(T a, T b){return(b?__gcd(a,b):a);}
template<typename T> T lcm(T a, T b){return(a*(b/gcd(a,b)));}
int add(int a, int b, int c = MOD){int res=a+b;return(res>=c?res-c:res);}
int mod_neg(int a, int b, int c = MOD){int res;if(abs(a-b)<c)res=a-b;else res=(a-b)%c;return(res<0?res+c:res);}
int mul(int a, int b, int c = MOD){ll res=(ll)a*b;return(res>=c?res%c:res);}
int muln(int a, int b, int c = MOD){ll res=(ll)a*b;return ((res%c)+c)%c;}
ll mulmod(ll a,ll b, ll m = MOD){ll q = (ll)(((LD)a*(LD)b)/(LD)m);ll r=a*b-q*m;if(r>m)r%=m;if(r<0)r+=m;return r;}
template<typename T>T expo(T e, T n){T x=1,p=e;while(n){if(n&1)x=x*p;p=p*p;n>>=1;}return x;}
template<typename T>T power(T e, T n, T m = MOD){T x=1,p=e;while(n){if(n&1)x=mul(x,p,m);p=mul(p,p,m);n>>=1;}return x;}
template<typename T>T extended_euclid(T a, T b, T &x, T &y){T xx=0,yy=1;y=0;x=1;while(b){T q=a/b,t=b;b=a%b;a=t;\
t=xx;xx=x-q*xx;x=t;t=yy;yy=y-q*yy;y=t;}return a;}
template<typename T>T mod_inverse(T a, T n = MOD){T x,y,z=0;T d=extended_euclid(a,n,x,y);return(d>1?-1:mod_neg(x,z,n));}
 
const int FACSZ = 1; // Make sure to change this
 
int fact[FACSZ],ifact[FACSZ];
 
void precom(int c = MOD){
    fact[0] = 1;
    FOR(i,1,FACSZ) fact[i] = mul(fact[i-1],i,c);
    ifact[FACSZ-1] = mod_inverse(fact[FACSZ-1],c);
    REPD(i,FACSZ-1){
        ifact[i] = mul(i+1,ifact[i+1],c);
    }
}
 
int ncr(int n,int r,int c = MOD){
    return mul(mul(ifact[r],ifact[n-r],c),fact[n],c);
} 
*/
// ----------------------</MATH>--------------------------
// --------------------------------------------------</TEMPLATE>--------------------------------------------------
 
void solvethetestcase();
 
signed main(){
    // comment when using scanf,printf
    FAST_IO
    int t = 1;
    // (UNCOMMENT FOR MULTIPLE TEST CASES)
    // cin >> t;
    FOR(testcase,1,t+1){
        // (UNCOMMENT FOR CODEJAM)
        // printf("Case #%lld: ",testcase); 
        solvethetestcase();
    }
}   
 
int n;
vi adj[MAXN];
int a[MAXN];

int dp[MAXN][2];

void dfs(int u,int p){
    // dp[u][1] = max(a[u],sum(dp[v][1])-a[u])
    // dp[u][0] = max(dp[u][1],a[u]+max(dp[v][1]),max(dp[v][0]));
    int sm = 0;
    int mx1 = 0,mx0 = 0;
    for(auto v:adj[u]){
        if(v != p){
            dfs(v,u);
            sm += dp[v][1];
            remax(mx0,dp[v][0]);
            remax(mx1,dp[v][1]);
        }
    }
    dp[u][1] = max(a[u],sm-a[u]);
    dp[u][0] = max({dp[u][1],a[u]+mx1,mx0});
    // trace(u,dp[u][0],dp[u][1]);
}
 
void solvethetestcase(){
    cin >> n;
    REP(i,n-1){
        int u,v; cin >> u >> v;
        adj[u].pb(v);
        adj[v].pb(u);
    }
    FOR(i,1,n+1){
        char c; cin >> c;
        a[i] = (c-'0');
    }
    dfs(1,1);
    cout << dp[1][0] << endl;
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23808 KB Output is correct
2 Correct 19 ms 23808 KB Output is correct
3 Correct 16 ms 23808 KB Output is correct
4 Correct 17 ms 23808 KB Output is correct
5 Correct 16 ms 23808 KB Output is correct
6 Correct 16 ms 23808 KB Output is correct
7 Correct 16 ms 23780 KB Output is correct
8 Correct 16 ms 23808 KB Output is correct
9 Correct 16 ms 23808 KB Output is correct
10 Correct 17 ms 23808 KB Output is correct
11 Correct 17 ms 23808 KB Output is correct
12 Correct 18 ms 23808 KB Output is correct
13 Correct 18 ms 23808 KB Output is correct
14 Correct 16 ms 23808 KB Output is correct
15 Correct 16 ms 23808 KB Output is correct
16 Correct 16 ms 23808 KB Output is correct
17 Correct 17 ms 23808 KB Output is correct
18 Correct 16 ms 23808 KB Output is correct
19 Correct 17 ms 23808 KB Output is correct
20 Correct 17 ms 23808 KB Output is correct
21 Correct 17 ms 23808 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23808 KB Output is correct
2 Correct 19 ms 23808 KB Output is correct
3 Correct 16 ms 23808 KB Output is correct
4 Correct 17 ms 23808 KB Output is correct
5 Correct 16 ms 23808 KB Output is correct
6 Correct 16 ms 23808 KB Output is correct
7 Correct 16 ms 23780 KB Output is correct
8 Correct 16 ms 23808 KB Output is correct
9 Correct 16 ms 23808 KB Output is correct
10 Correct 17 ms 23808 KB Output is correct
11 Correct 17 ms 23808 KB Output is correct
12 Correct 18 ms 23808 KB Output is correct
13 Correct 18 ms 23808 KB Output is correct
14 Correct 16 ms 23808 KB Output is correct
15 Correct 16 ms 23808 KB Output is correct
16 Correct 16 ms 23808 KB Output is correct
17 Correct 17 ms 23808 KB Output is correct
18 Correct 16 ms 23808 KB Output is correct
19 Correct 17 ms 23808 KB Output is correct
20 Correct 17 ms 23808 KB Output is correct
21 Correct 17 ms 23808 KB Output is correct
22 Correct 20 ms 23936 KB Output is correct
23 Correct 18 ms 23936 KB Output is correct
24 Correct 16 ms 23936 KB Output is correct
25 Correct 17 ms 23936 KB Output is correct
26 Correct 16 ms 23936 KB Output is correct
27 Correct 16 ms 23936 KB Output is correct
28 Correct 16 ms 23936 KB Output is correct
29 Correct 16 ms 24064 KB Output is correct
30 Correct 21 ms 24064 KB Output is correct
31 Correct 17 ms 23936 KB Output is correct
32 Correct 19 ms 23936 KB Output is correct
33 Correct 17 ms 23936 KB Output is correct
34 Correct 17 ms 23936 KB Output is correct
35 Correct 20 ms 23928 KB Output is correct
36 Correct 19 ms 23936 KB Output is correct
37 Correct 19 ms 23936 KB Output is correct
38 Correct 17 ms 23936 KB Output is correct
39 Correct 17 ms 23936 KB Output is correct
40 Correct 17 ms 23936 KB Output is correct
41 Correct 17 ms 23936 KB Output is correct
42 Correct 19 ms 23936 KB Output is correct
43 Correct 17 ms 23980 KB Output is correct
44 Correct 18 ms 24040 KB Output is correct
45 Correct 17 ms 23936 KB Output is correct
46 Correct 17 ms 23936 KB Output is correct
47 Correct 19 ms 23936 KB Output is correct
48 Correct 17 ms 24064 KB Output is correct
49 Correct 18 ms 24064 KB Output is correct
50 Correct 19 ms 23936 KB Output is correct
51 Correct 19 ms 23936 KB Output is correct
52 Correct 18 ms 23964 KB Output is correct
53 Correct 18 ms 23936 KB Output is correct
54 Correct 18 ms 23984 KB Output is correct
55 Correct 19 ms 23936 KB Output is correct
56 Correct 17 ms 23936 KB Output is correct
57 Correct 18 ms 24064 KB Output is correct
58 Correct 18 ms 23936 KB Output is correct
59 Correct 17 ms 23936 KB Output is correct
60 Correct 17 ms 24064 KB Output is correct
61 Correct 17 ms 23936 KB Output is correct
62 Correct 18 ms 24064 KB Output is correct
63 Correct 18 ms 23956 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23808 KB Output is correct
2 Correct 19 ms 23808 KB Output is correct
3 Correct 16 ms 23808 KB Output is correct
4 Correct 17 ms 23808 KB Output is correct
5 Correct 16 ms 23808 KB Output is correct
6 Correct 16 ms 23808 KB Output is correct
7 Correct 16 ms 23780 KB Output is correct
8 Correct 16 ms 23808 KB Output is correct
9 Correct 16 ms 23808 KB Output is correct
10 Correct 17 ms 23808 KB Output is correct
11 Correct 17 ms 23808 KB Output is correct
12 Correct 18 ms 23808 KB Output is correct
13 Correct 18 ms 23808 KB Output is correct
14 Correct 16 ms 23808 KB Output is correct
15 Correct 16 ms 23808 KB Output is correct
16 Correct 16 ms 23808 KB Output is correct
17 Correct 17 ms 23808 KB Output is correct
18 Correct 16 ms 23808 KB Output is correct
19 Correct 17 ms 23808 KB Output is correct
20 Correct 17 ms 23808 KB Output is correct
21 Correct 17 ms 23808 KB Output is correct
22 Correct 20 ms 23936 KB Output is correct
23 Correct 18 ms 23936 KB Output is correct
24 Correct 16 ms 23936 KB Output is correct
25 Correct 17 ms 23936 KB Output is correct
26 Correct 16 ms 23936 KB Output is correct
27 Correct 16 ms 23936 KB Output is correct
28 Correct 16 ms 23936 KB Output is correct
29 Correct 16 ms 24064 KB Output is correct
30 Correct 21 ms 24064 KB Output is correct
31 Correct 17 ms 23936 KB Output is correct
32 Correct 19 ms 23936 KB Output is correct
33 Correct 17 ms 23936 KB Output is correct
34 Correct 17 ms 23936 KB Output is correct
35 Correct 20 ms 23928 KB Output is correct
36 Correct 19 ms 23936 KB Output is correct
37 Correct 19 ms 23936 KB Output is correct
38 Correct 17 ms 23936 KB Output is correct
39 Correct 17 ms 23936 KB Output is correct
40 Correct 17 ms 23936 KB Output is correct
41 Correct 17 ms 23936 KB Output is correct
42 Correct 19 ms 23936 KB Output is correct
43 Correct 17 ms 23980 KB Output is correct
44 Correct 18 ms 24040 KB Output is correct
45 Correct 17 ms 23936 KB Output is correct
46 Correct 17 ms 23936 KB Output is correct
47 Correct 19 ms 23936 KB Output is correct
48 Correct 17 ms 24064 KB Output is correct
49 Correct 18 ms 24064 KB Output is correct
50 Correct 19 ms 23936 KB Output is correct
51 Correct 19 ms 23936 KB Output is correct
52 Correct 18 ms 23964 KB Output is correct
53 Correct 18 ms 23936 KB Output is correct
54 Correct 18 ms 23984 KB Output is correct
55 Correct 19 ms 23936 KB Output is correct
56 Correct 17 ms 23936 KB Output is correct
57 Correct 18 ms 24064 KB Output is correct
58 Correct 18 ms 23936 KB Output is correct
59 Correct 17 ms 23936 KB Output is correct
60 Correct 17 ms 24064 KB Output is correct
61 Correct 17 ms 23936 KB Output is correct
62 Correct 18 ms 24064 KB Output is correct
63 Correct 18 ms 23956 KB Output is correct
64 Correct 212 ms 35964 KB Output is correct
65 Correct 202 ms 35872 KB Output is correct
66 Correct 209 ms 35832 KB Output is correct
67 Correct 211 ms 35832 KB Output is correct
68 Correct 207 ms 35880 KB Output is correct
69 Correct 207 ms 35832 KB Output is correct
70 Correct 207 ms 35960 KB Output is correct
71 Correct 211 ms 35832 KB Output is correct
72 Correct 208 ms 35940 KB Output is correct
73 Correct 222 ms 47528 KB Output is correct
74 Correct 218 ms 47480 KB Output is correct
75 Correct 202 ms 37240 KB Output is correct
76 Correct 219 ms 37112 KB Output is correct
77 Correct 213 ms 35960 KB Output is correct
78 Correct 225 ms 35964 KB Output is correct
79 Correct 214 ms 35832 KB Output is correct
80 Correct 216 ms 35896 KB Output is correct
81 Correct 173 ms 35944 KB Output is correct
82 Correct 190 ms 35820 KB Output is correct
83 Correct 223 ms 41080 KB Output is correct
84 Correct 213 ms 43128 KB Output is correct
85 Correct 214 ms 42744 KB Output is correct
86 Correct 207 ms 37184 KB Output is correct
87 Correct 208 ms 36732 KB Output is correct
88 Correct 187 ms 36688 KB Output is correct
89 Correct 191 ms 36728 KB Output is correct
90 Correct 190 ms 36600 KB Output is correct
91 Correct 220 ms 36728 KB Output is correct
92 Correct 212 ms 37116 KB Output is correct
93 Correct 183 ms 39276 KB Output is correct
94 Correct 173 ms 41064 KB Output is correct
95 Correct 170 ms 39912 KB Output is correct
96 Correct 185 ms 38008 KB Output is correct
97 Correct 180 ms 36452 KB Output is correct
98 Correct 190 ms 36216 KB Output is correct
99 Correct 211 ms 35960 KB Output is correct
100 Correct 174 ms 38904 KB Output is correct
101 Correct 181 ms 36812 KB Output is correct
102 Correct 179 ms 36216 KB Output is correct
103 Correct 180 ms 36216 KB Output is correct
104 Correct 117 ms 36324 KB Output is correct
105 Correct 213 ms 44348 KB Output is correct
106 Correct 124 ms 36324 KB Output is correct
107 Correct 124 ms 36328 KB Output is correct
108 Correct 214 ms 48248 KB Output is correct
109 Correct 116 ms 36328 KB Output is correct
110 Correct 223 ms 48760 KB Output is correct
111 Correct 190 ms 35832 KB Output is correct