Submission #446757

#	Time	Username	Problem	Language	Result	Execution time	Memory
446757		maomao90	Just Long Neckties (JOI20_ho_t1)	C++17	100 / 100	123 ms	13184 KiB

ho_t1

#include <bits/stdc++.h> 
using namespace std;

template <class T>
inline bool mnto(T& a, T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T& a, T b) {return a < b ? a = b, 1: 0;}
#define REP(i, s, e) for (int i = s; i < e; i++)
#define RREP(i, s, e) for (int i = s; i >= e; i--)
typedef long long ll;
typedef long double ld;
#define MP make_pair
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
#define MT make_tuple
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define pb push_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;

#ifdef DEBUG
#define debug(args...) _debug(args)
void _debug(const char* format, ...) {
	va_list args;
	va_start(args, format);
	vprintf(format, args);
	va_end(args);
}
#else
#define debug(args...)
#endif

#define INF 1000000005
#define LINF 1000000000000000005
#define MOD 1000000007
#define MAXN 200005

int n;
ii a[MAXN];
int b[MAXN];
ll pre[MAXN], pst[MAXN], ans[MAXN];

int main() {
	scanf("%d", &n);
	REP (i, 1, n + 2) {
		scanf("%d", &a[i].FI);
		a[i].SE = i;
	}
	REP (i, 1, n + 1) {
		scanf("%d", &b[i]);
	}
	sort(a + 1, a + n + 2);
	sort(b + 1, b + n + 1);
	REP (i, 1, n + 1) {
		pre[i] = max(a[i].FI - b[i], 0);
		debug("%d: %d\n", i, pre[i]);
		mxto(pre[i], pre[i - 1]);
	}
	RREP (i, n + 1, 2) {
		pst[i] = max(a[i].FI - b[i - 1], 0);
		debug("%d: %d\n", i, pst[i]);
		mxto(pst[i], pst[i + 1]);
	}
	REP (i, 1, n + 2) {
		debug("%d: %d %d\n", a[i].SE, pre[i - 1], pst[i + 1]);
		ans[a[i].SE] = max(pre[i - 1], pst[i + 1]);
	}
	REP (i, 1, n + 2) {
		printf("%lld ", ans[i]);
	}
	printf("\n");
	return 0;
}

Compilation message (stderr)

ho_t1.cpp: In function 'int main()':
ho_t1.cpp:48:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
ho_t1.cpp:50:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |   scanf("%d", &a[i].FI);
      |   ~~~~~^~~~~~~~~~~~~~~~
ho_t1.cpp:54:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |   scanf("%d", &b[i]);
      |   ~~~~~^~~~~~~~~~~~~

• Subtask 1: 1 / 1
• Subtask 2: 8 / 8
• Subtask 3: 91 / 91