#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define X first
#define Y second
#define y0 y12
#define y1 y22
#define INF 987654321
#define PI 3.141592653589793238462643383279502884
#define fup(i,a,b,c) for(int (i)=(a);(i)<=(b);(i)+=(c))
#define fdn(i,a,b,c) for(int (i)=(a);(i)>=(b);(i)-=(c))
#define MEM0(a) memset((a),0,sizeof(a));
#define MEM_1(a) memset((a),-1,sizeof(a));
#define ALL(a) a.begin(),a.end()
#define SYNC ios_base::sync_with_stdio(false);cin.tie(0)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef double db;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef pair<int, int> Pi;
typedef pair<ll, ll> Pll;
typedef pair<ld, ld> Pd;
typedef vector<int> Vi;
typedef vector<ll> Vll;
typedef vector<ld> Vd;
typedef vector<Pi> VPi;
typedef vector<Pll> VPll;
typedef vector<Pd> VPd;
typedef tuple<int, int, int> iii;
typedef tuple<int, int, int, int> iiii;
typedef tuple<ll, ll, ll> LLL;
typedef vector<iii> Viii;
typedef vector<LLL> VLLL;
typedef complex<double> base;
const int MOD = 1000000007;
ll POW(ll a, ll b, ll MMM = MOD) { ll ret = 1; for (; b; b >>= 1, a = (a*a) % MMM)if (b & 1)ret = (ret*a) % MMM; return ret; }
ll gcd(ll a, ll b) { return b ? gcd(b, a%b) : a; }
ll lcm(ll a, ll b) { if (a == 0 || b == 0)return a + b; return a*(b / gcd(a, b)); }
int dx[] = { 0,1,0,-1,1,1,-1,-1 }, dy[] = { 1,0,-1,0,1,-1,1,-1 };
int ddx[] = { -1,-2,1,-2,2,-1,2,1 }, ddy[] = { -2,-1,-2,1,-1,2,1,2 };
struct A{
int y;
ll c,d;
};
vector<A> v[200001];
ll sum;
ll q1;
ll dfs1(int N,int p=-1)
{
ll res=0;
for(auto &P:v[N])
{
if(P.y==p)continue;
res+=P.d+dfs1(P.y,N);
}
return res;
}
void dfs2(int N,ll now,int p=-1)
{
q1=max(q1,now);
for(auto &P:v[N])
{
if(P.y==p)continue;
dfs2(P.y,now+P.c-P.d,N);
}
}
int main() {
int n,R;
scanf("%d",&n);
if(n==2)
{
int a,b,c,d,q;
scanf("%d%d%d%d%d",&a,&b,&c,&d,&q);
while(q--)
{
int x;
scanf("%d",&x);
if(x==1)printf("%d\n",min(c,d));
else puts("0");
}
return 0;
}
fup(i,1,n-1,1)
{
int x,y;
ll c,d;
scanf("%d%d%lld%lld",&x,&y,&c,&d);
sum+=c+d;
v[x].pb({y,c,d});
v[y].pb({x,d,c});
}
fup(i,1,n,1)if(v[i].size()>1)R=i;
ll now=dfs1(R);
dfs2(R,now);
int q;
scanf("%d",&q);
while(q--)
{
int x;
scanf("%d",&x);
if(x==1)printf("%lld\n",q1);
}
}
Compilation message
designated_cities.cpp: In function 'int main()':
designated_cities.cpp:72:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d",&n);
~~~~~^~~~~~~~~
designated_cities.cpp:76:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%d%d%d",&a,&b,&c,&d,&q);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
designated_cities.cpp:80:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d",&x);
~~~~~^~~~~~~~~
designated_cities.cpp:90:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%lld%lld",&x,&y,&c,&d);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
designated_cities.cpp:99:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d",&q);
~~~~~^~~~~~~~~
designated_cities.cpp:103:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d",&x);
~~~~~^~~~~~~~~
designated_cities.cpp:96:15: warning: 'R' may be used uninitialized in this function [-Wmaybe-uninitialized]
ll now=dfs1(R);
^
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 2 |
Incorrect |
8 ms |
4984 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 2 |
Incorrect |
320 ms |
23544 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 2 |
Incorrect |
304 ms |
23492 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 2 |
Incorrect |
8 ms |
4984 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 2 |
Incorrect |
320 ms |
23544 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 2 |
Incorrect |
8 ms |
4984 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
