#pragma GCC target("avx")
#pragma GCC optimize(3)
#pragma GCC optimize("Ofast")
#pragma GCC optimize("inline")
#pragma GCC optimize("-fgcse")
#pragma GCC optimize("-fgcse-lm")
#pragma GCC optimize("-fipa-sra")
#pragma GCC optimize("-ftree-pre")
#pragma GCC optimize("-ftree-vrp")
#pragma GCC optimize("-fpeephole2")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-fsched-spec")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("-falign-jumps")
#pragma GCC optimize("-falign-loops")
#pragma GCC optimize("-falign-labels")
#pragma GCC optimize("-fdevirtualize")
#pragma GCC optimize("-fcaller-saves")
#pragma GCC optimize("-fcrossjumping")
#pragma GCC optimize("-fthread-jumps")
#pragma GCC optimize("-funroll-loops")
#pragma GCC optimize("-fwhole-program")
#pragma GCC optimize("-freorder-blocks")
#pragma GCC optimize("-fschedule-insns")
#pragma GCC optimize("inline-functions")
#pragma GCC optimize("-ftree-tail-merge")
#pragma GCC optimize("-fschedule-insns2")
#pragma GCC optimize("-fstrict-aliasing")
#pragma GCC optimize("-fstrict-overflow")
#pragma GCC optimize("-falign-functions")
#pragma GCC optimize("-fcse-skip-blocks")
#pragma GCC optimize("-fcse-follow-jumps")
#pragma GCC optimize("-fsched-interblock")
#pragma GCC optimize("-fpartial-inlining")
#pragma GCC optimize("no-stack-protector")
#pragma GCC optimize("-freorder-functions")
#pragma GCC optimize("-findirect-inlining")
#pragma GCC optimize("-fhoist-adjacent-loads")
#pragma GCC optimize("-frerun-cse-after-loop")
#pragma GCC optimize("inline-small-functions")
#pragma GCC optimize("-finline-small-functions")
#pragma GCC optimize("-ftree-switch-conversion")
#pragma GCC optimize("-foptimize-sibling-calls")
#pragma GCC optimize("-fexpensive-optimizations")
#pragma GCC optimize("-funsafe-loop-optimizations")
#pragma GCC optimize("inline-functions-called-once")
#pragma GCC optimize("-fdelete-null-pointer-checks")
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ll long long
#define FOR(i, l, r) for (int i = (l); i <= (r); i++)
#define FOD(i, r, l) for (int i = (r); i >= (l); i--)
#define fi first
#define se second
#define pii pair<int, int>
const ll mod = 1e9 + 7;
const ll MAXN = 1e5 + 1;
const int oo = 1e18;
const int base = 320;
int n, s[MAXN], p[MAXN], d[MAXN];
vector<pii> adj[MAXN];
int xoa[MAXN];
int f[MAXN];
vector<int> A, B, xoaA, xoaB;
bool bad(int l1, int l2, int l3){
return (B[l3]-B[l1])*(A[l1]-A[l2])<(B[l2]-B[l1])*(A[l1]-A[l3]);
}
void add(int a, int b, int u){
// if(u==7){
// for(auto x:A){
// cout << x << ' ';
// }
// cout << '\n';
// }
A.push_back(a);
B.push_back(b);
while((int)A.size()>=3 && bad(A.size()-3, A.size()-2, A.size()-1)){
xoaA.push_back(A[A.size()-2]);
xoaB.push_back(B[B.size()-2]);
xoa[u]++;
A.erase(A.end()-2);
B.erase(B.end()-2);
}
// if(u==9){
// for(auto x:A){
// cout << x << ' ';
// }
// cout << '\n';
// for(auto x:B){
// cout << x << ' ';
// }
// cout << '\n';
// }
}
void hoi(int a, int b, int u){
A.pop_back();
B.pop_back();
int cnt=0;
while(cnt<xoa[u]){
A.push_back(xoaA.back());
B.push_back(xoaB.back());
xoaA.pop_back();
xoaB.pop_back();
cnt++;
}
xoa[u]=0;
// if(u==7){
// for(auto x:A){
// cout << x << ' ';
// }
// cout << '\n';
// }
}
int query(int x){
int l=1, r=(int)A.size()-1, id=1;
if(r==-1){
return 0;
}
if(r==0){
return A[0]*x+B[0];
}
int ans=oo;
while(l<=r){
int mid=(l+r)/2;
if(A[mid]*x+B[mid]<A[mid-1]*x+B[mid-1]){
id=mid;
l=mid+1;
ans=min(ans, A[mid]*x+B[mid]);
}
else{
r=mid-1;
ans=min(ans, A[mid-1]+B[mid-1]);
}
}
// if(x==6)cout << id << '\n';
ans=min({ans, A[id]*x+B[id], A[id-1]*x+B[id-1]});
if(id!=A.size()-1){
ans=min(ans, A[id+1]*x+B[id+1]);
}
return ans;
}
void dfs2(int u, int last){
if(u!=1){
f[u]=query(p[u])+d[u]*p[u]+s[u];
// if(u==4) cout << query(p[u]) << ' ';
}
add(-d[u], f[u], u);
for(auto [v, c]:adj[u]){
if(v==last) continue;
d[v]=d[u]+c;
dfs2(v, u);
}
hoi(-d[u], f[u], u);
}
signed main()
{
ios::sync_with_stdio(false);
cin.tie(nullptr);
if (fopen(".INP", "r"))
{
freopen(".INP", "r", stdin);
freopen(".OUT", "w", stdout);
}
cin >> n;
FOR(i, 1, n-1){
int u, v, c;
cin >> u >> v >> c;
adj[u].push_back({v, c});
adj[v].push_back({u, c});
}
FOR(i, 2, n){
cin >> s[i] >> p[i];
}
dfs2(1, 1);
FOR(i, 2, n){
cout << f[i] << ' ';
}
return 0;
}
Compilation message (stderr)
harbingers.cpp:22:39: warning: bad option '-fwhole-program' to pragma 'optimize' [-Wpragmas]
22 | #pragma GCC optimize("-fwhole-program")
| ^
harbingers.cpp:29:41: warning: bad option '-fstrict-overflow' to pragma 'optimize' [-Wpragmas]
29 | #pragma GCC optimize("-fstrict-overflow")
| ^
harbingers.cpp:31:41: warning: bad option '-fcse-skip-blocks' to pragma 'optimize' [-Wpragmas]
31 | #pragma GCC optimize("-fcse-skip-blocks")
| ^
harbingers.cpp:45:51: warning: bad option '-funsafe-loop-optimizations' to pragma 'optimize' [-Wpragmas]
45 | #pragma GCC optimize("-funsafe-loop-optimizations")
| ^
harbingers.cpp:69:32: warning: bad option '-fwhole-program' to attribute 'optimize' [-Wattributes]
69 | bool bad(int l1, int l2, int l3){
| ^
harbingers.cpp:69:32: warning: bad option '-fstrict-overflow' to attribute 'optimize' [-Wattributes]
harbingers.cpp:69:32: warning: bad option '-fcse-skip-blocks' to attribute 'optimize' [-Wattributes]
harbingers.cpp:69:32: warning: bad option '-funsafe-loop-optimizations' to attribute 'optimize' [-Wattributes]
harbingers.cpp:72:29: warning: bad option '-fwhole-program' to attribute 'optimize' [-Wattributes]
72 | void add(int a, int b, int u){
| ^
harbingers.cpp:72:29: warning: bad option '-fstrict-overflow' to attribute 'optimize' [-Wattributes]
harbingers.cpp:72:29: warning: bad option '-fcse-skip-blocks' to attribute 'optimize' [-Wattributes]
harbingers.cpp:72:29: warning: bad option '-funsafe-loop-optimizations' to attribute 'optimize' [-Wattributes]
harbingers.cpp:100:29: warning: bad option '-fwhole-program' to attribute 'optimize' [-Wattributes]
100 | void hoi(int a, int b, int u){
| ^
harbingers.cpp:100:29: warning: bad option '-fstrict-overflow' to attribute 'optimize' [-Wattributes]
harbingers.cpp:100:29: warning: bad option '-fcse-skip-blocks' to attribute 'optimize' [-Wattributes]
harbingers.cpp:100:29: warning: bad option '-funsafe-loop-optimizations' to attribute 'optimize' [-Wattributes]
harbingers.cpp:119:16: warning: bad option '-fwhole-program' to attribute 'optimize' [-Wattributes]
119 | int query(int x){
| ^
harbingers.cpp:119:16: warning: bad option '-fstrict-overflow' to attribute 'optimize' [-Wattributes]
harbingers.cpp:119:16: warning: bad option '-fcse-skip-blocks' to attribute 'optimize' [-Wattributes]
harbingers.cpp:119:16: warning: bad option '-funsafe-loop-optimizations' to attribute 'optimize' [-Wattributes]
harbingers.cpp:148:26: warning: bad option '-fwhole-program' to attribute 'optimize' [-Wattributes]
148 | void dfs2(int u, int last){
| ^
harbingers.cpp:148:26: warning: bad option '-fstrict-overflow' to attribute 'optimize' [-Wattributes]
harbingers.cpp:148:26: warning: bad option '-fcse-skip-blocks' to attribute 'optimize' [-Wattributes]
harbingers.cpp:148:26: warning: bad option '-funsafe-loop-optimizations' to attribute 'optimize' [-Wattributes]
harbingers.cpp:164:13: warning: bad option '-fwhole-program' to attribute 'optimize' [-Wattributes]
164 | signed main()
| ^
harbingers.cpp:164:13: warning: bad option '-fstrict-overflow' to attribute 'optimize' [-Wattributes]
harbingers.cpp:164:13: warning: bad option '-fcse-skip-blocks' to attribute 'optimize' [-Wattributes]
harbingers.cpp:164:13: warning: bad option '-funsafe-loop-optimizations' to attribute 'optimize' [-Wattributes]
harbingers.cpp: In function 'int main()':
harbingers.cpp:171:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
171 | freopen(".INP", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~
harbingers.cpp:172:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
172 | freopen(".OUT", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~| # | Verdict | Execution time | Memory | Grader output |
|---|
| Fetching results... |
