Submission #402582

#	Time	Username	Problem	Language	Result	Execution time	Memory
402582		jamezzz	Colors (RMI18_colors)	C++14	0 / 100	3088 ms	6908 KiB

colors

#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#include <ext/rope>
using namespace __gnu_cxx;

typedef tree<long long, null_type, less<long long>,
rb_tree_tag, tree_order_statistics_node_update> pbds;
//less_equal for identical elements

#define DEBUG

#ifdef DEBUG
#define debug(...) printf(__VA_ARGS__);
#else
#define debug(...)
#endif
#define sf scanf
#define pf printf
#define fi first
#define se second
#define pb emplace_back
#define sz(x) (int)x.size()
#define mnto(x,y) x=min(x,(__typeof__(x))y)
#define mxto(x,y) x=max(x,(__typeof__(x))y)
#define INF 1023456789
#define LINF 1023456789123456789
#define all(x) x.begin(), x.end()
typedef long long ll;
typedef long double ld;
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef tuple<int, int, int> iii;
typedef tuple<int, int, int, int> iiii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<pll> vll;

int n,m,a[150005],b[150005],u,v;
bool found,vis[150005];
vi AL[150005];
stack<int> s;

void dfs(int u,int w){
	if(a[u]==w)found=true;
	vis[u]=true;s.push(u);
	for(int v:AL[u]){
		if(vis[v]||w<b[v]||a[v]<w)continue;
		dfs(v,w);
	}
}

int main(){
	int t;sf("%d",&t);
	while(t--){
		sf("%d%d",&n,&m);
		bool pos=true;
		for(int i=1;i<=n;++i){
			AL[i].clear();
			sf("%d",&a[i]);
		}
		for(int i=1;i<=n;++i){
			sf("%d",&b[i]);
			if(b[i]>a[i])pos=false;
		}
		for(int i=0;i<m;++i){
			sf("%d%d",&u,&v);
			AL[u].pb(v);
			AL[v].pb(u);
		}
		for(int i=1;i<=n;++i){
			found=false;dfs(i,b[i]);
			pos=pos&&found;
			if(!pos)break;
			while(!s.empty())vis[s.top()]=false,s.pop();
		}
		pf("%d\n",pos);
	}
}

Compilation message (stderr)

colors.cpp: In function 'int main()':
colors.cpp:56:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |  int t;sf("%d",&t);
      |          ^
colors.cpp:58:5: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   58 |   sf("%d%d",&n,&m);
      |     ^
colors.cpp:62:6: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |    sf("%d",&a[i]);
      |      ^
colors.cpp:65:6: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |    sf("%d",&b[i]);
      |      ^
colors.cpp:69:6: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   69 |    sf("%d%d",&u,&v);
      |      ^

• Subtask 1: 0 / 15
• Subtask 2: 0 / 7
• Subtask 3: 0 / 8
• Subtask 4: 0 / 15
• Subtask 5: 0 / 7
• Subtask 6: 0 / 16
• Subtask 7: 0 / 10
• Subtask 8: 0 / 22