Submission #49580

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
49580	2018-05-31 12:51:06	mra2322001	Synchronization (JOI13_synchronization)	C++14	100 / 100	613 ms	68360 KiB

synchronization

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#include <bits/stdc++.h>
#define f0(i, n) for(int i=(0); i<n; i++)
#define f1(i, n) for(int i=(1); i<=n; i++)
using namespace std;
typedef long long ll;
const int N = 100002;
int n, m, q, dd[N], ans[N], tin[N], tout[N], t[8*N];
vector <pair <int, int> > edge; int last[N];
vector <int> a[N];
ostream& operator << (ostream &os, pair <int, int> x){
    cout << x.first << " " << x.second;
}
istream& operator >> (istream &is, pair <int, int> &x){
    cin >> x.first >> x.second;
}
int tim = 0;
void dfs(int u, int p){
    tin[u] = ++tim;
    for(auto v:a[u]) if(v != p) dfs(v, u);
    tout[u] = ++tim;
}
void up(int k, int l, int r, int i, int val){
    if(r < i || l > i) return ;
    if(l==r){
        t[k] += val;
 
 
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Compilation message (stderr)

synchronization.cpp: In function 'std::ostream& operator<<(std::ostream&, std::pair<int, int>)':
synchronization.cpp:15:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
synchronization.cpp: In function 'std::istream& operator>>(std::istream&, std::pair<int, int>&)':
synchronization.cpp:18:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
synchronization.cpp: At global scope:
synchronization.cpp:51:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 10 / 10
• Subtask 4: 20 / 20
• Subtask 5: 40 / 40