oj.uz

답안 #154153

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
154153 2019-09-18T16:16:02 Z Ruxandra985 Uzastopni (COCI15_uzastopni) C++14
120 / 160
 500 ms 9080 KB 
#include <cstdio>
#include <iostream>
#include <vector>
#include <bitset>

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

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

    }
    for (len = 2; len <= k ;len++){
        for (x = 1; x + len - 1 <= k ; x++){
            y = x + len - 1;
            for (z=x;z<y && !dp[x][y][nod];z++){
                dp[x][y][nod] = (dp[x][z][nod] & dp[z+1][y][nod]);
            }
        }
    }
    for (x=1;x<=k;x++){
        for (y=x;y<=k;y++){
            if (x > joke[nod] || y < joke[nod])
                dp[x][y][nod] = 0;
        }
    }


}
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[i][j][1];
        }
    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:49:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     fscanf (fin,"%d",&n);
     ~~~~~~~^~~~~~~~~~~~~
uzastopni.cpp:51:16: 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:55:16: 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 760 KB Output is correct
2 Correct 3 ms 760 KB Output is correct
3 Correct 3 ms 632 KB Output is correct
4 Correct 3 ms 632 KB Output is correct
5 Correct 3 ms 632 KB Output is correct
6 Correct 64 ms 7032 KB Output is correct
7 Correct 63 ms 7032 KB Output is correct
8 Correct 65 ms 7032 KB Output is correct
9 Correct 61 ms 6904 KB Output is correct
10 Correct 59 ms 6904 KB Output is correct
11 Correct 27 ms 1244 KB Output is correct
12 Correct 15 ms 1016 KB Output is correct
13 Correct 9 ms 888 KB Output is correct
14 Execution timed out 1070 ms 9032 KB Time limit exceeded
15 Execution timed out 1088 ms 9080 KB Time limit exceeded
16 Execution timed out 1074 ms 9080 KB Time limit exceeded
17 Correct 9 ms 888 KB Output is correct
18 Correct 9 ms 888 KB Output is correct
19 Execution timed out 1074 ms 7596 KB Time limit exceeded
20 Execution timed out 1054 ms 7376 KB Time limit exceeded