oj.uz

Submission #997056

# Submission time Handle Problem Language Result Execution time Memory
997056 2024-06-11T16:26:26 Z yeediot Jobs (BOI24_jobs) C++17
11 / 100
 82 ms 36176 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define pii pair<int,int>
#define pb push_back
#define sz(x) (int)(x.size())
#define chmin(x,y) x=min(x,y)
#define chmax(x,y) x=max(x,y)
#define vi vector<int>
#define vp vector<pii>
#define vvi vector<vi>
#define ykh mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count())
#define __lg(x) 63-__builtin_clzll(x)
#define pow2(x) (1LL<<x)
void __print(int x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}
#ifdef local
void CHECK();
void setio(){
    freopen("/Users/iantsai/cpp/input.txt","r",stdin);
    freopen("/Users/iantsai/cpp/output.txt","w",stdout);
}
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
void setio(){}
#define debug(x...)
#endif
#define TOI_is_so_de ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);setio();
const int mxn = 3e5+5;
vector<int>adj[mxn];
int p[mxn], val[mxn];
bool vis[mxn];
#define pqpii priority_queue<pii>
pqpii dfs(int v){
    pqpii pq;
    for(auto u : adj[v]){
        auto pq2 = dfs(u);
        if(sz(pq2) > sz(pq))swap(pq, pq2);
        while(sz(pq2)){
            pq.push(pq2.top());
            pq2.pop();
        }
    }
    if(val[v] > 0){
        pq.push({0, val[v]});
    }
    else{
        int mn = val[v], sum = val[v];
        while(sz(pq)){
            auto [mn2, sum2] = pq.top();
            pq.pop();
            mn = min(mn, sum+mn2);
            sum += sum2;
        }
        if(sum > 0){
            pq.push({mn, sum});
        }
    }
    return pq;
}
signed main(){
    TOI_is_so_de;
    int n, s, ans = 0;
    cin >> n >> s;
    val[0] = s;
    for(int i=1;i<=n;i++){
        cin >> val[i] >> p[i];
        adj[p[i]].pb(i);
    }
    auto pq = dfs(0);
    while(sz(pq)){
        auto [mn, sum] = pq.top();
        pq.pop();
        if(ans >= mn) ans += sum;
        else break;
    }
    cout << ans-val[0] << '\n';
    #ifdef local
    CHECK();
    #endif
}
/*
input:
 
*/
#ifdef local
void CHECK(){
    cerr << "\n[Time]: " << 1000.0 * clock() / CLOCKS_PER_SEC << " ms.\n";
     function<bool(string,string)> compareFiles = [](string p1, string p2)->bool {
         std::ifstream file1(p1);
         std::ifstream file2(p2);
         if (!file1.is_open() || !file2.is_open())return false;
         std::string line1, line2;
         while (getline(file1, line1) && getline(file2, line2)) {
             if (line1 != line2)return false;
         }
         int cnta=0,cntb=0;
         while(getline(file1,line1))cnta++;
         while(getline(file2,line2))cntb++;
         return cntb-cnta<=1;
     };
     bool check = compareFiles("output.txt","expected.txt");
     if (check) cerr<<"ACCEPTED\n";
     else cerr<<"WRONG ANSWER!\n";
}
#else
#endif

Compilation message

Main.cpp: In function 'void setIO(std::string)':
Main.cpp:35:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:36:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 20292 KB Output is correct
2 Correct 67 ms 19608 KB Output is correct
3 Correct 70 ms 21120 KB Output is correct
4 Correct 64 ms 30548 KB Output is correct
5 Correct 64 ms 35664 KB Output is correct
6 Correct 42 ms 17336 KB Output is correct
7 Correct 81 ms 19488 KB Output is correct
8 Correct 77 ms 21124 KB Output is correct
9 Correct 58 ms 34384 KB Output is correct
10 Correct 62 ms 36176 KB Output is correct
11 Correct 81 ms 19856 KB Output is correct
12 Correct 60 ms 18344 KB Output is correct
13 Correct 82 ms 19860 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 12120 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 12120 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 12120 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 20292 KB Output is correct
2 Correct 67 ms 19608 KB Output is correct
3 Correct 70 ms 21120 KB Output is correct
4 Correct 64 ms 30548 KB Output is correct
5 Correct 64 ms 35664 KB Output is correct
6 Correct 42 ms 17336 KB Output is correct
7 Correct 81 ms 19488 KB Output is correct
8 Correct 77 ms 21124 KB Output is correct
9 Correct 58 ms 34384 KB Output is correct
10 Correct 62 ms 36176 KB Output is correct
11 Correct 81 ms 19856 KB Output is correct
12 Correct 60 ms 18344 KB Output is correct
13 Correct 82 ms 19860 KB Output is correct
14 Incorrect 2 ms 12120 KB Output isn't correct
15 Halted 0 ms 0 KB -