Submission #972898

#	Time	Username	Problem	Language	Result	Execution time	Memory
972898		sleepntsheep	Palembang Bridges (APIO15_bridge)	C11	22 / 100	46 ms	10324 KiB

bridge

#include <stdio.h>
#include <stdlib.h>
#define MAX_N 2000000

int min(int a,int b){return a<b?a:b;}
int max(int a,int b){return a>b?a:b;}
int cmpr(const void*a,const void*b){return *(const int*)a - *(const int*)b;}

int n, k, a[MAX_N], b[MAX_N], c[MAX_N<<1], o, p;
long long cost;

int main()
{
    scanf("%d%d", &k, &n);
    for (int s, t, i = 0; i < n; ++i)
    {
        char bb, cc;
        scanf(" %c%d %c%d",&bb,&s,&cc,&t);
        if(bb==cc) cost += abs(t-s);
        else
        {
            a[o] = min(s, t);
            b[o] = max(s, t);
            c[p++] = s; c[p++] = t;
            ++o;
            ++cost;
        }
    }

    if(k==1)
    {
        qsort(c, p, sizeof*c, cmpr);
        for(int j=0;j<p;++j)
            cost += abs(c[p/2] - c[j]);
        printf("%lld\n", cost);
    }

}

Compilation message (stderr)

bridge.c: In function 'main':
bridge.c:14:5: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     scanf("%d%d", &k, &n);
      |     ^~~~~~~~~~~~~~~~~~~~~
bridge.c:18:9: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |         scanf(" %c%d %c%d",&bb,&s,&cc,&t);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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