Submission #1085047

#	Time	Username	Problem	Language	Result	Execution time	Memory
1085047		Sunbae	Schools (IZhO13_school)	C++17	25 / 100	156 ms	7200 KiB

school

#include <bits/stdc++.h>
typedef long long ll;
#define z exit(0)
#define mp make_pair
#define F first
#define S second
using namespace std;
using pii = pair<int,int>;
const int N = 3e5 + 5;
pii a[N];
int v[N];
bool cmp1(int i, int j){
	return mp(a[i].F - a[i].S, a[i].S) > mp(a[j].F - a[j].S, a[j].S); 
}
bool cmp2(int i, int j){
	return mp(a[i].S - a[i].F, a[i].F) > mp(a[j].S - a[j].F, a[j].F); 
}
bool cmp11(int i, int j){
	return a[i].S > a[j].S;
}
bool cmp22(int i, int j){
	return a[i].F > a[j].F;
}
signed main(){
	int n, m[2]; scanf("%d %d %d", &n, m, m+1);
	for(int i = 0, x, y; i<n; ++i){
		scanf("%d %d", &x, &y);
		a[i] = mp(x, y);
	}
	for(int i = 0; i<n; ++i) v[i] = i;
	sort(v, v+n, cmp1);
	ll sum = 0;
	int idx = 0;
	for(int cnt = 0; cnt < m[0]; ++cnt, ++idx) sum += a[v[idx]].F;
	sort(v+idx, v+n, cmp11);
	for(int cnt = 0; cnt < m[1]; ++cnt, ++idx) sum += a[v[idx]].S;
	ll mx = sum;
	//
	sort(v, v+n, cmp2);
	sum = idx = 0;
	for(int cnt = 0; cnt < m[1]; ++cnt, ++idx) sum += a[v[idx]].S;
	sort(v+idx, v+n, cmp22);
	for(int cnt = 0; cnt < m[0]; ++cnt, ++idx) sum += a[v[idx]].F;
	mx = max(mx, sum);
	printf("%lld", mx);
}

Compilation message (stderr)

school.cpp: In function 'int main()':
school.cpp:25:20: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |  int n, m[2]; scanf("%d %d %d", &n, m, m+1);
      |               ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
school.cpp:27:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |   scanf("%d %d", &x, &y);
      |   ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 25 / 100