Submission #110945

#	Time	Username	Problem	Language	Result	Execution time	Memory
110945		PeppaPig	Palembang Bridges (APIO15_bridge)	C++14	22 / 100	66 ms	4456 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);
    vector<int> vec;
    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);
            if(k == 1) vec.emplace_back(b), vec.emplace_back(d);
        }
    }
    n = v.size();
    if(k == 1) {
        if(!vec.empty()) {
            sort(vec.begin(), vec.end());
            int bridge = vec[(vec.size() - 1) / 2];
            for(int i = 0; i < vec.size(); i++) ans += abs(bridge - vec[i]);
        }
        printf("%lld\n", ans + n);
    }

    return 0;
}

Compilation message (stderr)

bridge.cpp: In function 'int main()':
bridge.cpp:34:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int i = 0; i < vec.size(); i++) ans += abs(bridge - vec[i]);
                            ~~^~~~~~~~~~~~
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:21:14: 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: 8 / 8
• Subtask 2: 14 / 14
• Subtask 3: 0 / 9
• Subtask 4: 0 / 32
• Subtask 5: 0 / 37