Submission #110935

#	Time	Username	Problem	Language	Result	Execution time	Memory
110935		PeppaPig	Palembang Bridges (APIO15_bridge)	C++14	0 / 100	3 ms	512 KiB

bridge

#include <bits/stdc++.h>

#define long long long
#define pii pair<int, int>
#define x first
#define y second

using namespace std;

const int N = 1e5+5;

int k, n;
long ans;
vector<pii> v;

int main() {
    scanf("%d %d", &k, &n);
    for(int i = 1; i <= n; i++) {
        char a, c; int b, d;
        scanf(" %c %d %c %d", &a, &b, &c, &d);
        if(b > d)  swap(b, d);
        if(a == c) ans += d - b;
        else v.emplace_back(b, d);
    }
    n = v.size();
    sort(v.begin(), v.end(), [&](const pii &a, const pii &b) {
        return a.x + a.y < b.x + b.y;
    });
    if(k == 1) {
        pii pos = v[(n - 1) / 2];
        int bridge = (pos.x + pos.y) / 2;
        for(int i = 0; i < n; i++) {
            ++ans;
            ans += abs(bridge - v[i].x);
            ans += abs(bridge - v[i].y);
        }
        printf("%lld\n", ans);
    }

    return 0;
}

Compilation message (stderr)

bridge.cpp: In function 'int main()':
bridge.cpp:17:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &k, &n);
     ~~~~~^~~~~~~~~~~~~~~~~
bridge.cpp:20:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf(" %c %d %c %d", &a, &b, &c, &d);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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