Submission #543676

#	Time	Username	Problem	Language	Result	Execution time	Memory
543676		Asymmetry	Snowball (JOI21_ho_t2)	C++17	100 / 100	174 ms	16932 KiB

Main

//Autor: Bartłomiej Czarkowski
#include <bits/stdc++.h>
using namespace std;
#ifdef DEBUG
template<class A,class B>auto&operator<<(ostream&o,pair<A,B>p){return o<<'('<<p.first<<", "<<p.second<<')';}
template<class T>auto operator<<(ostream&o,T x)->decltype(x.end(),o){o<<'{';int i=0;for(auto e:x)o<<(", ")+2*!i++<<e;return o<<'}';}
#define debug(x...) cerr<<"["#x"]: ",[](auto...$){((cerr<<$<<"; "),...);}(x),cerr<<'\n'
#else
#define debug(...) {}
#endif

const int N = 201000;
int n, q;
long long odp[N];
long long t[N];
long long w[N];
long long pw[N];
long long pref_min[N];
long long pref_max[N];

int main() {
	scanf("%d%d", &n, &q);
	for (int i = 1; i <= n; ++i) {
		scanf("%lld", &t[i]);
	}
	for (int i = 1; i <= q; ++i) {
		scanf("%lld", &w[i]);
		pw[i] = pw[i - 1] + w[i];
		pref_min[i] = min(pref_min[i - 1], pw[i]);
		pref_max[i] = max(pref_max[i - 1], pw[i]);
	}
	odp[1] -= pref_min[q];
	odp[n] += pref_max[q];
	for (int i = 1; i < n; ++i) {
		long long dif = t[i + 1] - t[i];
		int bp = 0, bk = q + 1, bs;
		while (bk - bp > 1) {
			bs = (bp + bk) / 2;
			if (pref_max[bs] - pref_min[bs] < dif) {
				bp = bs;
			}
			else {
				bk = bs;
			}
		}
		debug(t[i], t[i + 1], bk, pref_min[bk], pref_max[bk]);
		if (bk == q + 1) {
			odp[i] += pref_max[q];
			odp[i + 1] -= pref_min[q];
		}
		else if (w[bk] < 0) {
			odp[i] += pref_max[bk];
			odp[i + 1] += dif - pref_max[bk];
		}
		else {
			debug("c", -pref_min[bk], dif + pref_min[bk]);
			odp[i + 1] -= pref_min[bk];
			odp[i] += dif + pref_min[bk];
		}
	}
	for (int i = 1; i <= n; ++i) {
		printf("%lld\n", odp[i]);
	}
	return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:22:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |  scanf("%d%d", &n, &q);
      |  ~~~~~^~~~~~~~~~~~~~~~
Main.cpp:24:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |   scanf("%lld", &t[i]);
      |   ~~~~~^~~~~~~~~~~~~~~
Main.cpp:27:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |   scanf("%lld", &w[i]);
      |   ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 33 / 33
• Subtask 2: 67 / 67