Submission #101620

#	Time	Username	Problem	Language	Result	Execution time	Memory
101620		dantoh000	Adriatic (CEOI13_adriatic)	C++14	25 / 100	2044 ms	263168 KiB

adriatic

#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> ii;
int main(){
    int n;
    scanf("%d",&n);
    int adjmat[n][n];
    memset(adjmat,-1,sizeof(adjmat));
    int x[n], y[n];
    for (int i = 0; i < n; i++){
        adjmat[i][i] = 0;
        scanf("%d%d",&x[i],&y[i]);
        for (int j = 0; j < i; j++){
            if ((x[i]<x[j]&&y[i]<y[j]) ||
                (x[i]>x[j]&&y[i]>y[j])){
                //printf("%d %d con\n",i,j);
                adjmat[i][j] = adjmat[j][i] = 1;
            }
        }
    }
    int ans = 0;
    for (int k = 0; k < n; k++){
        for (int i = 0; i < n; i++){
            if (adjmat[i][k] == -1) continue;
            for (int j = i+1; j < n; j++){
                if (adjmat[k][j] == -1) continue;
                if (adjmat[i][j]==-1) adjmat[j][i] = adjmat[i][j] = adjmat[i][k]+adjmat[k][j];
                else adjmat[j][i] = adjmat[i][j] = min(adjmat[i][j],adjmat[i][k]+adjmat[k][j]);
            }
        }
    }
    for (int i = 0 ;i  <n; i++){
        int ans = 0;
        for (int j = 0; j < n; j++){
            //printf("%d ",adjmat[i][j]);
            ans += adjmat[i][j];
        }
        printf("%d\n",ans);
    }
}

Compilation message (stderr)

adriatic.cpp: In function 'int main()':
adriatic.cpp:21:9: warning: unused variable 'ans' [-Wunused-variable]
     int ans = 0;
         ^~~
adriatic.cpp:6:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
adriatic.cpp:12:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d",&x[i],&y[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 25 / 25
• Subtask 2: 0 / 25
• Subtask 3: 0 / 10
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20