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Submission #14528

# Submission time Handle Problem Language Result Execution time Memory
14528 2015-05-19T06:29:31 Z dohyun0324 Palembang Bridges (APIO15_bridge) C++
22 / 100
 86 ms 5084 KB 
#include<stdio.h>
#include<algorithm>
#include<queue>
using namespace std;
priority_queue<int>q;
priority_queue<int,vector<int>,greater<int> >q2;
char c1,c2;
long long dap,d[3][100010],dap2,dap3;
int t,w2,k,n,x1,x2,w,arr[200010];
struct data{
    int x,y;
    bool operator<(const data&r)const{
        return (x+y)<r.x+r.y;
    }
}a[100010];
void pro(int p)
{
    int i,c=0;
    long long sum=0,sum2=0,mid=0;
    q.push(min(a[1].x,a[1].y)); q2.push(max(a[1].x,a[1].y));
    d[p][1]=abs(a[1].x-a[1].y);
    sum=min(a[1].x,a[1].y); sum2=a[1].x+a[1].y;
    for(i=2;i<=w;i++){
        sum2+=a[i].x+a[i].y;
        if(q.top()>a[i].x){
            sum+=a[i].x-q.top();
            q2.push(q.top()); q.pop(); q.push(a[i].x);
        }
        else q2.push(a[i].x);
        sum+=q2.top(); q.push(q2.top()); q2.pop();
        if(q.top()>a[i].y){
            sum+=a[i].y-q.top();
            q2.push(q.top()); q.pop(); q.push(a[i].y);
        }
        else q2.push(a[i].y);
        mid=q.top();
        d[p][i]=mid*i-sum+(sum2-sum)-mid*i;
    }
}
int main()
{
    int i;
    scanf("%d %d",&k,&n);
    for(i=1;i<=n;i++){
        scanf(" %c %d %c %d",&c1,&x1,&c2,&x2);
        if(c1==c2) dap+=abs(x2-x1);
        else{w++; a[w].x=x1; a[w].y=x2; arr[++w2]=x1; arr[++w2]=x2;}
    }
    dap2=dap;
    sort(a+1,a+w+1); sort(arr+1,arr+w2+1);
    if(k==1 || k==2){
        for(i=1;i<=w2;i++) dap+=abs(arr[i]-arr[w]);
        dap3=dap;
    }
    else{
        dap=2147483647;
        pro(1); reverse(a+1,a+w+1); pro(2);
        for(i=1;i<=w;i++) dap=min(dap,d[1][i]+d[2][w-i]);
    }
    if(k==2) printf("%lld",min(dap3+w,dap+w+dap2));
    else printf("%lld",dap3+w);
    return 0;
}

Compilation message

bridge.cpp: In function 'void pro(int)':
bridge.cpp:18:11: warning: unused variable 'c' [-Wunused-variable]
     int i,c=0;
           ^
bridge.cpp: In function 'int main()':
bridge.cpp:43:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&k,&n);
                         ^
bridge.cpp:45:46: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf(" %c %d %c %d",&c1,&x1,&c2,&x2);
                                              ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 5084 KB Output is correct
2 Correct 0 ms 5084 KB Output is correct
3 Correct 0 ms 5084 KB Output is correct
4 Correct 0 ms 5084 KB Output is correct
5 Correct 0 ms 5084 KB Output is correct
6 Correct 0 ms 5084 KB Output is correct
7 Correct 0 ms 5084 KB Output is correct
8 Correct 0 ms 5084 KB Output is correct
9 Correct 0 ms 5084 KB Output is correct
10 Correct 0 ms 5084 KB Output is correct
11 Correct 0 ms 5084 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 5084 KB Output is correct
2 Correct 0 ms 5084 KB Output is correct
3 Correct 0 ms 5084 KB Output is correct
4 Correct 0 ms 5084 KB Output is correct
5 Correct 0 ms 5084 KB Output is correct
6 Correct 0 ms 5084 KB Output is correct
7 Correct 0 ms 5084 KB Output is correct
8 Correct 0 ms 5084 KB Output is correct
9 Correct 0 ms 5084 KB Output is correct
10 Correct 0 ms 5084 KB Output is correct
11 Correct 0 ms 5084 KB Output is correct
12 Correct 33 ms 5084 KB Output is correct
13 Correct 66 ms 5084 KB Output is correct
14 Correct 46 ms 5084 KB Output is correct
15 Correct 53 ms 5084 KB Output is correct
16 Correct 39 ms 5084 KB Output is correct
17 Correct 43 ms 5084 KB Output is correct
18 Correct 46 ms 5084 KB Output is correct
19 Correct 86 ms 5084 KB Output is correct
20 Correct 53 ms 5084 KB Output is correct
21 Correct 53 ms 5084 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 5084 KB Output is correct
2 Correct 0 ms 5084 KB Output is correct
3 Incorrect 0 ms 5084 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 5084 KB Output is correct
2 Correct 0 ms 5084 KB Output is correct
3 Incorrect 0 ms 5084 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 5084 KB Output is correct
2 Correct 0 ms 5084 KB Output is correct
3 Incorrect 0 ms 5084 KB Output isn't correct
4 Halted 0 ms 0 KB -