oj.uz

답안 #154218

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
154218 2019-09-19T11:10:38 Z Ruxandra985 Uzastopni (COCI15_uzastopni) C++14
120 / 160
 500 ms 17976 KB 
#include <cstdio>
#include <iostream>
#include <vector>
#include <bitset>

using namespace std;
bitset <101> dp[10001][101];
vector <int> v[10001];
int joke[10001],k;
void dfs (int nod){
    int i,vecin,x,y,z,len;
    dp[nod][joke[nod]][joke[nod]] = 1;

    for (i=0;i<v[nod].size();i++){
        dfs (v[nod][i]);
        vecin = v[nod][i];
        /// acum e acum:P
        for (x=1;x<=k;x++){
            for (y=x;y<=k;y++){
                if (x <= joke[vecin] && joke[vecin] <= y){
                    if (x > joke[nod] || y < joke[nod])
                        dp[nod][x][y] = (dp[nod][x][y] | dp[vecin][x][y]);
                }
            }
        }

    }

    for (len = 2; len <= k ;len++){
        for (x = 1; x + len - 1 <= k ; x++){
            y = x + len - 1;
            for (z=x;z<y && !dp[nod][x][y];z++){
                dp[nod][x][y] = (dp[nod][x][z] & dp[nod][z+1][y]);
            }
        }
    }



}
int main()
{
    FILE *fin = stdin;
    FILE *fout = stdout;
    int n,i,x,y,sol,j;
    fscanf (fin,"%d",&n);
    for (i=1;i<=n;i++){
        fscanf (fin,"%d",&joke[i]);
        k = max ( k ,joke[i]);
    }
    for (i=1;i<n;i++){
        fscanf (fin,"%d%d",&x,&y);
        v[x].push_back(y);
    }
    dfs (1);
    sol = 0;
    for (i=1;i<=joke[1];i++)
        for (j=joke[1];j<=k;j++)
            sol = sol + dp[1][i][j];
    fprintf (fout,"%d",sol);
    return 0;
}

Compilation message

uzastopni.cpp: In function 'void dfs(int)':
uzastopni.cpp:14:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i=0;i<v[nod].size();i++){
              ~^~~~~~~~~~~~~~
uzastopni.cpp: In function 'int main()':
uzastopni.cpp:46:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     fscanf (fin,"%d",&n);
     ~~~~~~~^~~~~~~~~~~~~
uzastopni.cpp:48:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         fscanf (fin,"%d",&joke[i]);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~
uzastopni.cpp:52:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         fscanf (fin,"%d%d",&x,&y);
         ~~~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
120.0 / 160.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 632 KB Output is correct
2 Correct 3 ms 760 KB Output is correct
3 Correct 3 ms 760 KB Output is correct
4 Correct 3 ms 632 KB Output is correct
5 Correct 3 ms 760 KB Output is correct
6 Correct 47 ms 760 KB Output is correct
7 Correct 47 ms 760 KB Output is correct
8 Correct 47 ms 760 KB Output is correct
9 Correct 45 ms 772 KB Output is correct
10 Correct 46 ms 760 KB Output is correct
11 Correct 45 ms 16760 KB Output is correct
12 Correct 29 ms 16760 KB Output is correct
13 Correct 23 ms 16760 KB Output is correct
14 Execution timed out 1067 ms 17976 KB Time limit exceeded
15 Execution timed out 1066 ms 17976 KB Time limit exceeded
16 Execution timed out 1073 ms 17952 KB Time limit exceeded
17 Correct 23 ms 16760 KB Output is correct
18 Correct 22 ms 16636 KB Output is correct
19 Execution timed out 1064 ms 4804 KB Time limit exceeded
20 Execution timed out 1079 ms 4844 KB Time limit exceeded