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Submission #791891

# Submission time Handle Problem Language Result Execution time Memory
791891 2023-07-24T12:17:57 Z Amylopectin Star Trek (CEOI20_startrek) C++14
23 / 100
 1000 ms 57520 KB 
#include <stdio.h>
#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
#include <stdlib.h>
using namespace std;
const long long mxn = 1e6 + 10,mo = 1e9 + 7;
struct we
{
    long long to,val[2][2],cur[2],num,ft;
    we()
    {
        to = 0;
        val[0][0] = -1;
        val[0][1] = -1;
        val[1][0] = -1;
        val[1][1] = -1;
        cur[0] = -1;
        cur[1] = -1;
        num = 0;
        ft = -1;
    }
    we(int cn,int cnu,int cft)
    {
        to = cn;
        val[0][0] = -1;
        val[0][1] = -1;
        val[1][0] = -1;
        val[1][1] = -1;
        cur[0] = -1;
        cur[1] = -1;
        num = cnu;
        ft = cft;
    }
};

vector<struct we> pat[mxn] = {};
long long pid[mxn][2] = {},rwol,stt[mxn][2][3] = {};
long long re(long long cn,long long cidx,long long wh)
{
    long long i,j,fn,fm,ccur = -1,cva0 = 0,fidx,wop = (wh+1)&1,fcur,fva0,cva1 = 0,fva1;
    if(cidx != -1)
    {
        if(pat[cn][cidx].cur[wh] != -1)
        {
            return 0;
        }
    }
    for(i=0; i<pat[cn].size(); i++)
    {
        fn = pat[cn][i].to;
        if(i == cidx)
        {
            continue;
        }
        fidx = pid[pat[cn][i].num][(pat[cn][i].ft + 1)&1];
        re(fn,fidx,wop);
        fcur = pat[fn][fidx].cur[wop];
        fva0 = pat[fn][fidx].val[wop][0];
        fva1 = pat[fn][fidx].val[wop][1];
        if(wh == 0)
        {
            if(ccur == -1)
            {
                ccur = fcur;
                if(ccur < 2)
                {
                    cva0 = fva0;
                    cva1 = fva1;
                }
            }
            else 
            {
                if(fcur == 0)
                {
                    if(ccur != 0)
                    {
                        cva0 = fva0;
                        cva1 = 0;
                    }
                    else
                    {
                        cva0 = 0;
                    }
                    ccur = 0;
                    
                }
                else if(fcur == 1)
                {
                    if(ccur == 0)
                    {
                        // cva0 += fva0;
                        // cva += fva;
                    }
                    else if(ccur == 1)
                    {
                        cva1 += fva1;
                        cva0 = 0;
                    }
                    else 
                    {
                        ccur = 1;
                        cva1 += fva1;
                        cva0 = 0;
                    }
                }
            }
        }
        else 
        {
            if(ccur == -1)
            {
                ccur = fcur;
                if(ccur == 2)
                {
                    ccur = 1;
                }
                // if(ccur < 2)
                // {
                    // cva = fva;
                cva0 = fva0;
                cva1 = fva1;
                // }
            }
            else 
            {
                if(ccur == 0)
                {
                    if(fcur == 0)
                    {
                        cva0 += fva0;
                    }
                    else if(fcur == 1)
                    {
                        ccur = 1;
                        cva0 = fva0;
                        cva1 = fva1;
                    }
                    else 
                    {
                        cva0 = fva0;
                        cva1 = fva1;
                        ccur = 1;
                    }
                }
                else if(ccur == 1)
                {
                    if(fcur >= 1)
                    {
                        cva0 = 0;
                        cva1 = 0;
                        ccur = 2;
                    }
                }
            }
        }
    }
    if(wh == 0)
    {
        if(ccur == -1)
        {
            ccur = 1;
            cva1 = 1;
            cva0 = 0;
        }
        else if(ccur == 0)
        {
            // cva ++;
        }
        else if(ccur >= 1)
        {
            ccur = 1;
            cva1 ++;
        }
    }
    else 
    {
        if(ccur == -1)
        {
            ccur = 0;
            cva0 = 1;
        }
        else if(ccur == 0)
        {
            cva0 ++;
        }
    }
    if(cidx == -1)
    {
        stt[cn][wh][0] = cva0;
        stt[cn][wh][1] = cva1;
        stt[cn][wh][2] = ccur;
    }
    else 
    {
        pat[cn][cidx].cur[wh] = ccur;
        pat[cn][cidx].val[wh][0] = cva0;
        pat[cn][cidx].val[wh][1] = cva1;
    }
    return 0;
}
int main()
{
    // freopen("input1.txt","r",stdin);
    long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
    scanf("%lld %lld",&n,&m);
    for(i=1; i<n; i++)
    {
        scanf("%lld %lld",&cn,&cm);
        pid[i][0] = pat[cn].size();
        pid[i][1] = pat[cm].size();
        pat[cn].push_back(we(cm,i,0));
        pat[cm].push_back(we(cn,i,1));
        // pat[cn].push_back({cm,{{-1,-1},{-1,-1}},{-1,-1},i,0});
        // pat[cm].push_back({cn,{{-1,-1},{-1,-1}},{-1,-1},i,1});
    }
    uw = 0;
    cva0 = 0;
    cva1 = 0;
    for(i=1; i<=n; i++)
    {
        re(i,-1,0);
        re(i,-1,1);
        if(stt[i][0][2] == 0)
        {
            cva0 ++;
        }
        if(stt[i][1][2] == 0)
        {
            cva1 ++;
        }
    }
    ans = 0;
    if(stt[1][0][2] == 0)
    {
        ans = ((n - stt[1][0][0] - stt[1][0][1]) * n) % mo;
    }
    ans += stt[1][0][0] * cva0 + stt[1][0][1] * cva1;
    ans %= mo;
    printf("%lld\n",ans);
    return 0;
}

Compilation message

startrek.cpp: In function 'long long int re(long long int, long long int, long long int)':
startrek.cpp:50:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<we>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     for(i=0; i<pat[cn].size(); i++)
      |              ~^~~~~~~~~~~~~~~
startrek.cpp:42:17: warning: unused variable 'j' [-Wunused-variable]
   42 |     long long i,j,fn,fm,ccur = -1,cva0 = 0,fidx,wop = (wh+1)&1,fcur,fva0,cva1 = 0,fva1;
      |                 ^
startrek.cpp:42:22: warning: unused variable 'fm' [-Wunused-variable]
   42 |     long long i,j,fn,fm,ccur = -1,cva0 = 0,fidx,wop = (wh+1)&1,fcur,fva0,cva1 = 0,fva1;
      |                      ^~
startrek.cpp: In function 'int main()':
startrek.cpp:206:17: warning: unused variable 'j' [-Wunused-variable]
  206 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                 ^
startrek.cpp:206:29: warning: unused variable 'fn' [-Wunused-variable]
  206 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                             ^~
startrek.cpp:206:32: warning: unused variable 'fm' [-Wunused-variable]
  206 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                ^~
startrek.cpp:206:35: warning: unused variable 'cl' [-Wunused-variable]
  206 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                   ^~
startrek.cpp:206:38: warning: unused variable 'cr' [-Wunused-variable]
  206 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                      ^~
startrek.cpp:206:41: warning: unused variable 'su' [-Wunused-variable]
  206 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                         ^~
startrek.cpp:206:44: warning: unused variable 'cen' [-Wunused-variable]
  206 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                            ^~~
startrek.cpp:206:58: warning: unused variable 'ccur' [-Wunused-variable]
  206 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                                          ^~~~
startrek.cpp:206:63: warning: variable 'uw' set but not used [-Wunused-but-set-variable]
  206 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                                               ^~
startrek.cpp:207:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  207 |     scanf("%lld %lld",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
startrek.cpp:210:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  210 |         scanf("%lld %lld",&cn,&cm);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23764 KB Output is correct
2 Incorrect 14 ms 24040 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 11 ms 23764 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23800 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 11 ms 23764 KB Output is correct
4 Correct 11 ms 23764 KB Output is correct
5 Correct 12 ms 23696 KB Output is correct
6 Correct 11 ms 23764 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23800 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 11 ms 23764 KB Output is correct
4 Correct 11 ms 23764 KB Output is correct
5 Correct 12 ms 23696 KB Output is correct
6 Correct 11 ms 23764 KB Output is correct
7 Correct 12 ms 24020 KB Output is correct
8 Correct 14 ms 24156 KB Output is correct
9 Correct 16 ms 23940 KB Output is correct
10 Correct 12 ms 24000 KB Output is correct
11 Correct 12 ms 24020 KB Output is correct

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23800 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 11 ms 23764 KB Output is correct
4 Correct 11 ms 23764 KB Output is correct
5 Correct 12 ms 23696 KB Output is correct
6 Correct 11 ms 23764 KB Output is correct
7 Correct 12 ms 24020 KB Output is correct
8 Correct 14 ms 24156 KB Output is correct
9 Correct 16 ms 23940 KB Output is correct
10 Correct 12 ms 24000 KB Output is correct
11 Correct 12 ms 24020 KB Output is correct
12 Correct 154 ms 51896 KB Output is correct
13 Correct 148 ms 57520 KB Output is correct
14 Execution timed out 1080 ms 41172 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23800 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 11 ms 23764 KB Output is correct
4 Correct 11 ms 23764 KB Output is correct
5 Correct 12 ms 23696 KB Output is correct
6 Correct 11 ms 23764 KB Output is correct
7 Correct 12 ms 24020 KB Output is correct
8 Correct 14 ms 24156 KB Output is correct
9 Correct 16 ms 23940 KB Output is correct
10 Correct 12 ms 24000 KB Output is correct
11 Correct 12 ms 24020 KB Output is correct
12 Correct 11 ms 23688 KB Output is correct
13 Incorrect 12 ms 24020 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23800 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 11 ms 23764 KB Output is correct
4 Correct 11 ms 23764 KB Output is correct
5 Correct 12 ms 23696 KB Output is correct
6 Correct 11 ms 23764 KB Output is correct
7 Correct 12 ms 24020 KB Output is correct
8 Correct 14 ms 24156 KB Output is correct
9 Correct 16 ms 23940 KB Output is correct
10 Correct 12 ms 24000 KB Output is correct
11 Correct 12 ms 24020 KB Output is correct
12 Correct 154 ms 51896 KB Output is correct
13 Correct 148 ms 57520 KB Output is correct
14 Execution timed out 1080 ms 41172 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #8
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23764 KB Output is correct
2 Incorrect 14 ms 24040 KB Output isn't correct
3 Halted 0 ms 0 KB -