Submission #119088

#	Time	Username	Problem	Language	Result	Execution time	Memory
119088		Bruteforceman	Cambridge (info1cup18_cambridge)	C++11	100 / 100	132 ms	10232 KiB

cambridge

#include "bits/stdc++.h"
using namespace std;
typedef pair <int, int> pii;
int t[100010], d[100010];
int opt[100010];
int order[100010];
int pos[100010];

long long sum[100010 * 4];
long long ans[100010 * 4];
const long long inf = 1e18;

int n;

bool cmp(int p, int q) {
	if(d[p] == d[q]) {
		return t[p] < t[q];
	}
	return d[p] < d[q];
}

void add(int x, int c = 1, int b = 1, int e = n) {
	if(b == e) {
		sum[c] = t[order[b]];
		ans[c] = d[order[b]] - t[order[b]];
		return ;
	}
	int m = (b + e) >> 1;
	int l = c << 1;
	int r = l + 1;
	if(x <= m) {
		add(x, l, b, m);
	} else {
		add(x, r, m + 1, e);
	}
	sum[c] = sum[l] + sum[r];
	ans[c] = min(ans[l], ans[r] - sum[l]);
}

void del(int x, int c = 1, int b = 1, int e = n) {
	if(b == e) {
		sum[c] = 0;
		ans[c] = inf;
		return ;
	}
	int m = (b + e) >> 1;
	int l = c << 1;
	int r = l + 1;
	if(x <= m) {
		del(x, l, b, m);
	} else {
		del(x, r, m + 1, e);
	}
	sum[c] = sum[l] + sum[r];
	ans[c] = min(ans[l], ans[r] - sum[l]);
}

int main(int argc, char const *argv[])
{
	int m;
	scanf("%d %d", &n, &m);
	for(int i = 1; i <= n; i++) {
		scanf("%d %d", &t[i], &d[i]);
		order[i] = i;
		del(i);
	}
	sort(order + 1, order + n + 1, cmp);
	for(int i = 1; i <= n; i++) {
		pos[order[i]] = i;
	}
	int cur = n;
	for(int i = n; i >= 1; i--) {
		add(pos[i]);
		while(cur >= i && ans[1] <= 0) {
			del(pos[cur--]);
		}
		opt[i] = cur;
	}
	while(m--) {
		int p, q;
		scanf("%d %d", &p, &q);
		printf("%d\n", (opt[p] >= q));
	}
	return 0;
}

Compilation message (stderr)

cambridge.cpp: In function 'int main(int, const char**)':
cambridge.cpp:61:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
cambridge.cpp:63:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &t[i], &d[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~
cambridge.cpp:81:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &p, &q);
   ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 25 / 25
• Subtask 3: 15 / 15
• Subtask 4: 45 / 45