oj.uz

Submission #791913

# Submission time Handle Problem Language Result Execution time Memory
791913 2023-07-24T12:29:31 Z Amylopectin Star Trek (CEOI20_startrek) C++14
23 / 100
 1000 ms 57264 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];
        if(fidx == -1)
        {
            exit(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 
    {
        if(ccur == -1)
        {
            exit(1);
        }
        pat[cn][cidx].cur[wh] = ccur;
        pat[cn][cidx].val[wh][0] = cva0;
        pat[cn][cidx].val[wh][1] = cva1;
    }
    cou ++;
    if(cou > 600000)
    {
        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:219:17: warning: unused variable 'j' [-Wunused-variable]
  219 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                 ^
startrek.cpp:219:29: warning: unused variable 'fn' [-Wunused-variable]
  219 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                             ^~
startrek.cpp:219:32: warning: unused variable 'fm' [-Wunused-variable]
  219 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                ^~
startrek.cpp:219:35: warning: unused variable 'cl' [-Wunused-variable]
  219 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                   ^~
startrek.cpp:219:38: warning: unused variable 'cr' [-Wunused-variable]
  219 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                      ^~
startrek.cpp:219:41: warning: unused variable 'su' [-Wunused-variable]
  219 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                         ^~
startrek.cpp:219:44: warning: unused variable 'cen' [-Wunused-variable]
  219 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                            ^~~
startrek.cpp:219:58: warning: unused variable 'ccur' [-Wunused-variable]
  219 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                                          ^~~~
startrek.cpp:219:63: warning: variable 'uw' set but not used [-Wunused-but-set-variable]
  219 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                                               ^~
startrek.cpp:220:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  220 |     scanf("%lld %lld",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
startrek.cpp:223:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  223 |         scanf("%lld %lld",&cn,&cm);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Incorrect 13 ms 24020 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 13 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 16 ms 23692 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 13 ms 23808 KB Output is correct
4 Correct 13 ms 23724 KB Output is correct
5 Correct 13 ms 23764 KB Output is correct
6 Correct 16 ms 23720 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23692 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 13 ms 23808 KB Output is correct
4 Correct 13 ms 23724 KB Output is correct
5 Correct 13 ms 23764 KB Output is correct
6 Correct 16 ms 23720 KB Output is correct
7 Correct 14 ms 24048 KB Output is correct
8 Correct 16 ms 24052 KB Output is correct
9 Correct 17 ms 23976 KB Output is correct
10 Correct 13 ms 24020 KB Output is correct
11 Correct 13 ms 24020 KB Output is correct

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23692 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 13 ms 23808 KB Output is correct
4 Correct 13 ms 23724 KB Output is correct
5 Correct 13 ms 23764 KB Output is correct
6 Correct 16 ms 23720 KB Output is correct
7 Correct 14 ms 24048 KB Output is correct
8 Correct 16 ms 24052 KB Output is correct
9 Correct 17 ms 23976 KB Output is correct
10 Correct 13 ms 24020 KB Output is correct
11 Correct 13 ms 24020 KB Output is correct
12 Correct 161 ms 51760 KB Output is correct
13 Correct 168 ms 57264 KB Output is correct
14 Execution timed out 1080 ms 40964 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23692 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 13 ms 23808 KB Output is correct
4 Correct 13 ms 23724 KB Output is correct
5 Correct 13 ms 23764 KB Output is correct
6 Correct 16 ms 23720 KB Output is correct
7 Correct 14 ms 24048 KB Output is correct
8 Correct 16 ms 24052 KB Output is correct
9 Correct 17 ms 23976 KB Output is correct
10 Correct 13 ms 24020 KB Output is correct
11 Correct 13 ms 24020 KB Output is correct
12 Correct 13 ms 23764 KB Output is correct
13 Incorrect 13 ms 24000 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23692 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 13 ms 23808 KB Output is correct
4 Correct 13 ms 23724 KB Output is correct
5 Correct 13 ms 23764 KB Output is correct
6 Correct 16 ms 23720 KB Output is correct
7 Correct 14 ms 24048 KB Output is correct
8 Correct 16 ms 24052 KB Output is correct
9 Correct 17 ms 23976 KB Output is correct
10 Correct 13 ms 24020 KB Output is correct
11 Correct 13 ms 24020 KB Output is correct
12 Correct 161 ms 51760 KB Output is correct
13 Correct 168 ms 57264 KB Output is correct
14 Execution timed out 1080 ms 40964 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #8
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Incorrect 13 ms 24020 KB Output isn't correct
3 Halted 0 ms 0 KB -