Submission #27483

#	Time	Username	Problem	Language	Result	Execution time	Memory
27483		suhgyuho_william	Long Distance Coach (JOI17_coach)	C++14	0 / 100	3 ms	13156 KiB

coach

#include <bits/stdc++.h>

#define lld long long
#define pii pair<int,int>
#define pll pair<lld,lld>
#define pb push_back
#define next nextt
#define Inf 1000000000
#define Linf 1000000000000000000LL
#define Mod 1000000007

using namespace std;

int N,M;
int it1[200002],it2[200002];
lld X,W,T,ans;
lld a[200002];
struct data{
	lld d,c;
}b[200002];
bool check[200002];
queue<int> q;
vector<int> tmp[200002];

lld get(lld x){
	return ((X-x)/T+1)*W;
}
bool flag;
void calc(int i){
	int it;
	lld small = 0,sum = 0;
	for(int j=it2[i]; j>=it1[i]; j--){
		if(check[j]) continue;
		sum += b[j].c;
		sum -= get((a[i]/T)*T+b[j].d);
		if(small > sum){
			small = sum;
			it = j;
		}
	}
	if(small == 0) return;
	ans += small;
	for(int j=it2[i]; j>=it; j--){
		if(check[j]) continue;
		q.push(j);
		check[j] = true;
		flag = true;
	}
}

int main(){
	scanf("%lld %d %d %lld %lld",&X,&N,&M,&W,&T);
	for(int i=1; i<=N; i++){
		scanf("%lld",&a[i]);
	}
	sort(a+1,a+N+1);
	ans += get(0);
	for(int i=1; i<=M; i++){
		scanf("%lld %lld",&b[i].d,&b[i].c);
		ans += get(b[i].d);
	}
	sort(b+1,b+M+1,[&](data &x,data &y){
		return x.d < y.d;
	});
	a[N+1] = X;
	for(int i=1; i<=N+1; i++){
		lld s,e;
		s = max(a[i-1],(a[i]/T)*T)+1;
		e = a[i]-1;
		if(s > e) continue;
		s %= T; e %= T;
		if(e < b[1].d || b[M].d < s) continue;
		int l,r;
		l = 1; r = M;
		while(l <= r){
			int m = (l+r)>>1;
			if(b[m].d >= s){
				it1[i] = m;
				r = m-1;
			}else l = m+1;
		}
		l = 1; r = M;
		while(l <= r){
			int m = (l+r)>>1;
			if(b[m].d <= e){
				it2[i] = m;
				l = m+1;
			}else r = m-1;
		}
		if(it1[i] > it2[i]) continue;
		for(int j=it1[i]; j<=it2[i]; j++) tmp[j].pb(i);
		calc(i);
		flag = false;
		while(!q.empty()){
			int v = q.front();
			q.pop();
			for(auto &j : tmp[v]) calc(j);
		}
		if(flag) while(true);
	}
	printf("%lld\n",ans);

	return 0;
}

Compilation message (stderr)

coach.cpp: In function 'int main()':
coach.cpp:52:46: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld %d %d %lld %lld",&X,&N,&M,&W,&T);
                                              ^
coach.cpp:54:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld",&a[i]);
                      ^
coach.cpp:59:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld %lld",&b[i].d,&b[i].c);
                                     ^

• Subtask 1: 0 / 16
• Subtask 2: 0 / 30
• Subtask 3: 0 / 25
• Subtask 4: 0 / 29