oj.uz

Submission #791948

# Submission time Handle Problem Language Result Execution time Memory
791948 2023-07-24T12:54:56 Z Amylopectin Star Trek (CEOI20_startrek) C++14
23 / 100
 1000 ms 58368 KB 
#include <stdio.h>
#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
#include <stdlib.h>
// #pragma GCC optimize("O3,unroll-loops")
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,u[mxn] = {};
long long re(long long cn,long long cidx,long long be,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;
        }
    }
    if(u[cn] == 1)
    {
        i = i;
        exit(1);
    }
    u[cn] = 1;
    for(i=0; i<pat[cn].size(); i++)
    {
        fn = pat[cn][i].to;

        if(i == cidx || fn == be)
        {
            continue;
        }
        fidx = pid[pat[cn][i].num][(pat[cn][i].ft + 1)&1];
        if(fidx == -1)
        {
            exit(1);
        }
        re(fn,fidx,cn,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 ++;
    u[cn] = 0;
    if(cou > 600000)
    {
        exit(1);
    }
    return 0;
}
int main()
{
    // freopen("input19.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,-1,0);
        re(i,-1,-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, long long int)':
startrek.cpp:57:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<we>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |     for(i=0; i<pat[cn].size(); i++)
      |              ~^~~~~~~~~~~~~~~
startrek.cpp:43:17: warning: unused variable 'j' [-Wunused-variable]
   43 |     long long i,j,fn,fm,ccur = -1,cva0 = 0,fidx,wop = (wh+1)&1,fcur,fva0,cva1 = 0,fva1;
      |                 ^
startrek.cpp:43:22: warning: unused variable 'fm' [-Wunused-variable]
   43 |     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:228:17: warning: unused variable 'j' [-Wunused-variable]
  228 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                 ^
startrek.cpp:228:29: warning: unused variable 'fn' [-Wunused-variable]
  228 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                             ^~
startrek.cpp:228:32: warning: unused variable 'fm' [-Wunused-variable]
  228 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                ^~
startrek.cpp:228:35: warning: unused variable 'cl' [-Wunused-variable]
  228 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                   ^~
startrek.cpp:228:38: warning: unused variable 'cr' [-Wunused-variable]
  228 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                      ^~
startrek.cpp:228:41: warning: unused variable 'su' [-Wunused-variable]
  228 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                         ^~
startrek.cpp:228:44: warning: unused variable 'cen' [-Wunused-variable]
  228 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                            ^~~
startrek.cpp:228:58: warning: unused variable 'ccur' [-Wunused-variable]
  228 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                                          ^~~~
startrek.cpp:228:63: warning: variable 'uw' set but not used [-Wunused-but-set-variable]
  228 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                                               ^~
startrek.cpp:229:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  229 |     scanf("%lld %lld",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
startrek.cpp:232:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  232 |         scanf("%lld %lld",&cn,&cm);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Incorrect 12 ms 24056 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 12 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 12 ms 23764 KB Output is correct
2 Correct 13 ms 23792 KB Output is correct
3 Correct 13 ms 23800 KB Output is correct
4 Correct 12 ms 23756 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 12 ms 23788 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 13 ms 23792 KB Output is correct
3 Correct 13 ms 23800 KB Output is correct
4 Correct 12 ms 23756 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 12 ms 23788 KB Output is correct
7 Correct 12 ms 24020 KB Output is correct
8 Correct 13 ms 24096 KB Output is correct
9 Correct 16 ms 24040 KB Output is correct
10 Correct 13 ms 24040 KB Output is correct
11 Correct 13 ms 24052 KB Output is correct

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 13 ms 23792 KB Output is correct
3 Correct 13 ms 23800 KB Output is correct
4 Correct 12 ms 23756 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 12 ms 23788 KB Output is correct
7 Correct 12 ms 24020 KB Output is correct
8 Correct 13 ms 24096 KB Output is correct
9 Correct 16 ms 24040 KB Output is correct
10 Correct 13 ms 24040 KB Output is correct
11 Correct 13 ms 24052 KB Output is correct
12 Correct 154 ms 52816 KB Output is correct
13 Correct 155 ms 58368 KB Output is correct
14 Execution timed out 1086 ms 42012 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 13 ms 23792 KB Output is correct
3 Correct 13 ms 23800 KB Output is correct
4 Correct 12 ms 23756 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 12 ms 23788 KB Output is correct
7 Correct 12 ms 24020 KB Output is correct
8 Correct 13 ms 24096 KB Output is correct
9 Correct 16 ms 24040 KB Output is correct
10 Correct 13 ms 24040 KB Output is correct
11 Correct 13 ms 24052 KB Output is correct
12 Correct 12 ms 23792 KB Output is correct
13 Incorrect 15 ms 24052 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 13 ms 23792 KB Output is correct
3 Correct 13 ms 23800 KB Output is correct
4 Correct 12 ms 23756 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 12 ms 23788 KB Output is correct
7 Correct 12 ms 24020 KB Output is correct
8 Correct 13 ms 24096 KB Output is correct
9 Correct 16 ms 24040 KB Output is correct
10 Correct 13 ms 24040 KB Output is correct
11 Correct 13 ms 24052 KB Output is correct
12 Correct 154 ms 52816 KB Output is correct
13 Correct 155 ms 58368 KB Output is correct
14 Execution timed out 1086 ms 42012 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #8
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Incorrect 12 ms 24056 KB Output isn't correct
3 Halted 0 ms 0 KB -