Submission #1088447

#	Time	Username	Problem	Language	Result	Execution time	Memory
1088447		Sunbae	Palembang Bridges (APIO15_bridge)	C++17	22 / 100	35 ms	4308 KiB

bridge

#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
int a[200000], P[100000][2];
bool ok[100000];
signed main(){
	int k, n, m = 0; scanf("%d %d", &k, &n);
	ll tot = 0, s[2] = {0, 0};
	for(int i = 0; i<n; ++i){
		char c[2]; int p[2]; scanf(" %c %d %c %d", c, p, c+1, p+1);
		if(c[0] == c[1]) tot += abs(p[0]-p[1]);
		else {a[m++] = p[0]; a[m++] = p[1]; ok[i] = true;}
		P[i][0] = p[0]; P[i][1] = p[1];
	}
	sort(a, a+m);
	if(k == 1){
		for(int j = 0; j<2; ++j) for(int i = 0; i<m; ++i) s[j] += abs(a[i] - a[m/2 - j]);
		printf("%lld", tot + min(s[0], s[1]) + m/2);
	}else{
		for(int i = 0; i<n; ++i){
			if(ok[i]){
				ll o[2] = {0, 0};
				for(int j = 0; j<2; ++j) o[j] = (ll)abs(P[i][0] - a[m/2 - j]) + (ll)abs(P[i][1] - a[m/2 - j]);
				tot += min(o[0], o[1]);
			}
		}
		printf("%lld", tot + m/2);
	}
}

Compilation message (stderr)

bridge.cpp: In function 'int main()':
bridge.cpp:7:24: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |  int k, n, m = 0; scanf("%d %d", &k, &n);
      |                   ~~~~~^~~~~~~~~~~~~~~~~
bridge.cpp:10:29: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |   char c[2]; int p[2]; scanf(" %c %d %c %d", c, p, c+1, p+1);
      |                        ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 14 / 14
• Subtask 3: 0 / 9
• Subtask 4: 0 / 32
• Subtask 5: 0 / 37