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Submission #791898

# Submission time Handle Problem Language Result Execution time Memory
791898 2023-07-24T12:22:06 Z Amylopectin Star Trek (CEOI20_startrek) C++14
23 / 100
 134 ms 47824 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(long long cn,long long cnu,long long 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] = {},cou = 0;
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;
    }
    cou ++;
    if(cou > 400000)
    {
        exit(1);
    }
    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].emplace_back(cm,i,0);
        pat[cm].emplace_back(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:211:17: warning: unused variable 'j' [-Wunused-variable]
  211 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                 ^
startrek.cpp:211:29: warning: unused variable 'fn' [-Wunused-variable]
  211 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                             ^~
startrek.cpp:211:32: warning: unused variable 'fm' [-Wunused-variable]
  211 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                ^~
startrek.cpp:211:35: warning: unused variable 'cl' [-Wunused-variable]
  211 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                   ^~
startrek.cpp:211:38: warning: unused variable 'cr' [-Wunused-variable]
  211 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                      ^~
startrek.cpp:211:41: warning: unused variable 'su' [-Wunused-variable]
  211 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                         ^~
startrek.cpp:211:44: warning: unused variable 'cen' [-Wunused-variable]
  211 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                            ^~~
startrek.cpp:211:58: warning: unused variable 'ccur' [-Wunused-variable]
  211 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                                          ^~~~
startrek.cpp:211:63: warning: variable 'uw' set but not used [-Wunused-but-set-variable]
  211 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                                               ^~
startrek.cpp:212:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  212 |     scanf("%lld %lld",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
startrek.cpp:215:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  215 |         scanf("%lld %lld",&cn,&cm);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23764 KB Output is correct
2 Incorrect 16 ms 23912 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 23796 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 10 ms 23764 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 11 ms 23832 KB Output is correct
4 Correct 12 ms 23752 KB Output is correct
5 Correct 12 ms 23708 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 23764 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 11 ms 23832 KB Output is correct
4 Correct 12 ms 23752 KB Output is correct
5 Correct 12 ms 23708 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 12 ms 24096 KB Output is correct
8 Correct 12 ms 24148 KB Output is correct
9 Correct 16 ms 24020 KB Output is correct
10 Correct 12 ms 23988 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 10 ms 23764 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 11 ms 23832 KB Output is correct
4 Correct 12 ms 23752 KB Output is correct
5 Correct 12 ms 23708 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 12 ms 24096 KB Output is correct
8 Correct 12 ms 24148 KB Output is correct
9 Correct 16 ms 24020 KB Output is correct
10 Correct 12 ms 23988 KB Output is correct
11 Correct 12 ms 24020 KB Output is correct
12 Runtime error 134 ms 47824 KB Execution failed because the return code was nonzero
13 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 23764 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 11 ms 23832 KB Output is correct
4 Correct 12 ms 23752 KB Output is correct
5 Correct 12 ms 23708 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 12 ms 24096 KB Output is correct
8 Correct 12 ms 24148 KB Output is correct
9 Correct 16 ms 24020 KB Output is correct
10 Correct 12 ms 23988 KB Output is correct
11 Correct 12 ms 24020 KB Output is correct
12 Correct 10 ms 23764 KB Output is correct
13 Incorrect 11 ms 24036 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 23764 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 11 ms 23832 KB Output is correct
4 Correct 12 ms 23752 KB Output is correct
5 Correct 12 ms 23708 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 12 ms 24096 KB Output is correct
8 Correct 12 ms 24148 KB Output is correct
9 Correct 16 ms 24020 KB Output is correct
10 Correct 12 ms 23988 KB Output is correct
11 Correct 12 ms 24020 KB Output is correct
12 Runtime error 134 ms 47824 KB Execution failed because the return code was nonzero
13 Halted 0 ms 0 KB -

Subtask #8
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23764 KB Output is correct
2 Incorrect 16 ms 23912 KB Output isn't correct
3 Halted 0 ms 0 KB -