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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#625905#9349. Exchanging GiftsThisTimeWA 225ms15676kbC++202.7kb2024-10-09 21:40:092024-10-09 21:40:09

Judging History

你现在查看的是最新测评结果

  • [2024-10-09 21:40:09]
  • 评测
  • 测评结果:WA
  • 用时:225ms
  • 内存:15676kb
  • [2024-10-09 21:40:09]
  • 提交

answer

#include<bits/stdc++.h>
#define deg(a) cout << #a << '=' << a << "\n"
#define all(a) a.begin(),a.end()
#define lowbit(x)  ((x)&(-x))
#define find1(x)  (__builtin_popcount(x))
#define pll pair<int,int>
// #define int long long   
#define endl '\n'
#define ff first
#define ss second
#define lc p<<1
#define rc p<<1|1
using namespace std;
using ll = long long;
const int N = 2e5+10;
const int M = 1e6+10;
const int mod1 = 998244353;
const int mod2 = 1e9+7;
const int inf = 0x3f3f3f3f3f3f3f;
const double eps = 1e-12;
int op[N];
std::vector<int> G[N];
int din[N] = {0};
int cnt[N] = {0};
map<int,int>F[N];
int read()
{
    int k=0,f=1;
    char c=getchar();
    while(c<'0'||c>'9')
    {
        if(c=='-')f=-1;
        c=getchar();
    }
    while(c>='0'&&c<='9')k=k*10+c-'0',c=getchar();
    return k*f;
}
void solve(){
     int n;
     cin >> n;
     for(int i = 1 ; i <= n ; i++) {
         G[i].clear();
         din[i] = 0;
         F[i].clear();
         cnt[i] = 0;
     }
     for(int i = 1 ; i <= n ; i++) {
         // op[i] = read();
         cin >> op[i];
         if(op[i] == 1) {
            int k;
            // k = read();
            cin >> k;
            for(int j = 1 ; j <= k ; j++) {
               int x;
               // x = read();
               cin >> x;
               F[i][x]++;
            }
         }else if(op[i] == 2) {
            int x,y;
            cin >> x >> y;
            // x = read();
            // y = read();
            G[i].push_back(x);
            G[i].push_back(y);
            din[x]++;
            din[y]++;
         }
     }
     queue<int>q;
     cnt[n] = 1;
     q.push(n);
     while(q.size()) {
         int u = q.front();
         q.pop();
         for(auto v : G[u]) {
            din[v]--;
            cnt[v] += cnt[u];
            if(din[v] == 0) {
               q.push(v);
            }
         }
     }
     map<int,int>mp;
     for(int i = 1 ; i <= n ; i++) {
         if(op[i] == 2) continue;
         for(auto [x,y] : F[i]) {
            mp[x] += cnt[i] * y;
         }
     }
     int sum = 0;
     int maxx = 0;
     for(auto [x,y] : mp) {
         sum += y;
         maxx = max(maxx,y);
         // cout << x << " "  << y << endl;
     }
     int ans = 0;
     int res = sum - maxx;
     if(n == 100) {
         deg(sum);
         deg(maxx);
         deg(cnt[n]);
     }
     if(maxx * 2 <= sum) {
         ans = sum;
     }else {
         ans = res * 2;
     }
     cout << ans << endl;
}
signed main()
{     
   cin.tie(nullptr); 
   ios::sync_with_stdio(false); 
   int kk = 1;
   cin >> kk;
   //cin.get(); 
   while(kk--) solve();
   return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 3ms
memory: 14164kb

input:

2
1
1 5 3 3 2 1 3
3
1 3 3 3 2
1 4 2 2 3 3
2 1 2

output:

4
6

result:

ok 2 lines

Test #2:

score: -100
Wrong Answer
time: 225ms
memory: 15676kb

input:

10000
100
1 30 371028678 371028678 371028678 716418076 398221499 591504380 398221499 398221499 591504380 777141390 398221499 591504380 591504380 777141390 287847807 716418076 777141390 716418076 777141390 287847807 287847807 287847807 371028678 371028678 398221499 777141390 371028678 6827702 6827702...

output:

sum=0
maxx=0
cnt[n]=1
0
sum=0
maxx=0
cnt[n]=1
0
sum=1
maxx=1
cnt[n]=1
0
sum=0
maxx=0
cnt[n]=1
0
sum=29
maxx=8
cnt[n]=1
29
sum=0
maxx=0
cnt[n]=1
0
sum=1
maxx=1
cnt[n]=1
0
sum=0
maxx=0
cnt[n]=1
0
sum=0
maxx=0
cnt[n]=1
0
sum=0
maxx=0
cnt[n]=1
0
sum=0
maxx=0
cnt[n]=1
0
sum=32
maxx=6
cnt[n]=1
32
sum=16
m...

result:

wrong answer 1st lines differ - expected: '700', found: 'sum=0'