Submission #6819714

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;

int n, m, par[100005], ans;
pair<int, int> p[100005];

int find(int a) {
	return par[a] == a ? a : par[a] = find(par[a]);
}

int main() {
	scanf("%d%d", &n, &m);
	for (int i = 0; i < n; i++)
		scanf("%d%d", &p[i].second, &p[i].first);
	sort(p, p + n);
	for (int i = 0; i <= m; i++)
		par[i] = i;
	for (int i = n - 1; i >= 0; i--) {
		if (p[i].second > m)
			continue;
		int ta = find(m - p[i].second);
		if (ta == m)
			continue;
		ans += p[i].first;
		par[ta] = ta ? ta - 1 : m;
	}
	printf("%d\n", ans);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:13:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &m);
                       ^
./Main.cpp:15:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &p[i].second, &p[i].first);
                                           ^

Judge Result