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Submission #423551

# Submission time Handle Problem Language Result Execution time Memory
423551 2021-06-11T09:21:25 Z Amylopectin Hotspot (NOI17_hotspot) C++14
100 / 100
 313 ms 1320 KB 
#include <iostream>
#include <stdio.h>
#include <vector>
#include <queue>
using namespace std;
const int mxn = 10010,mxi = 1e9 + 10;
queue <int> qu;
vector <int> pa[mxn] = {};
int di[mxn] = {},u[mxn] = {};
double psu[mxn] = {},npa[mxn] = {},rdi[mxn] = {};
int main()
{
    int i,j,n,m,f,t,cdi,fdi,fn,cn,q,k,stn,enn,su,cou;
    double cma,df,dt;
    scanf("%d %d",&n,&m);
    for(i=0; i<m; i++)
    {
        scanf("%d %d",&f,&t);
        pa[f].push_back(t);
        pa[t].push_back(f);
    }
    scanf("%d",&q);
    for(i=0; i<q; i++)
    {
        scanf("%d %d",&stn,&enn);
        qu.push(stn);
        for(j=0; j<n; j++)
        {
            di[j] = mxi;
            npa[j] = 0;
            rdi[j] = 0;
        }
        npa[stn] = 1;
        di[stn] = 0;
        while(!qu.empty())
        {
            cn = qu.front();
            if(cn == enn)
            {
                break;
            }
            qu.pop();
            for(j=0; j<pa[cn].size(); j++)
            {
                fn = pa[cn][j];
                if(di[fn] < di[cn]+1)
                {
                    continue;
                }
                if(npa[fn] == 0)
                {
                    npa[fn] += npa[cn];
                    di[fn] = di[cn] + 1;
                    qu.push(fn);
                }
                else
                {
                    npa[fn] += npa[cn];
                }
            }
        }
        while(!qu.empty())
        {
            qu.pop();
        }
        qu.push(enn);
        dt = npa[enn];
        rdi[enn] = npa[enn];
        while(!qu.empty())
        {
            cn = qu.front();
            df = rdi[cn];
            psu[cn] += df / dt;
//            if(cn == enn)
//            {
//                break;
//            }
            qu.pop();
//            cu = 0;
            for(j=0; j<pa[cn].size(); j++)
            {
                fn = pa[cn][j];
//                if(di[fn] + 1 == di[cn] && u[fn] == i+1)
//                {
//
//                }
                if(di[fn] + 1 == di[cn])
                {
                    rdi[fn] += (npa[fn] / npa[cn]) * rdi[cn];
                }
                if(di[fn] + 1 == di[cn] && u[fn] != i+1)
                {
                    u[fn] = i+1;
                    qu.push(fn);
                }
//                if(di[fn] == di[cn] + 1)
//                {
//                    if(u[fn] == i+1)
//                    {
//                        cou ++;
//                    }
//                }
//                if(di[fn] < di[cn]+1)
//                {
//                    continue;
//                }
//                if(npa[fn] == 0)
//                {
//                    npa[fn] += npa[cn];
//                    di[fn] = di[cn] + 1;
//                    qu.push(fn);
//                }
//                else
//                {
//                    npa[fn] += npa[cn];
//                }
            }
//            npa[fn] *= cou;
//            df = npa[fn];
//            psu[cn] += df / dt;
        }
    }
    cma = -1;
    cn = -1;
    for(i=0; i<n; i++)
    {
        if(psu[i] > cma)
        {
            cn = i;
            cma = psu[i];
        }
    }
    printf("%d\n",cn);
    return 0;
}

Compilation message

hotspot.cpp: In function 'int main()':
hotspot.cpp:43:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |             for(j=0; j<pa[cn].size(); j++)
      |                      ~^~~~~~~~~~~~~~
hotspot.cpp:80:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   80 |             for(j=0; j<pa[cn].size(); j++)
      |                      ~^~~~~~~~~~~~~~
hotspot.cpp:13:21: warning: unused variable 'cdi' [-Wunused-variable]
   13 |     int i,j,n,m,f,t,cdi,fdi,fn,cn,q,k,stn,enn,su,cou;
      |                     ^~~
hotspot.cpp:13:25: warning: unused variable 'fdi' [-Wunused-variable]
   13 |     int i,j,n,m,f,t,cdi,fdi,fn,cn,q,k,stn,enn,su,cou;
      |                         ^~~
hotspot.cpp:13:37: warning: unused variable 'k' [-Wunused-variable]
   13 |     int i,j,n,m,f,t,cdi,fdi,fn,cn,q,k,stn,enn,su,cou;
      |                                     ^
hotspot.cpp:13:47: warning: unused variable 'su' [-Wunused-variable]
   13 |     int i,j,n,m,f,t,cdi,fdi,fn,cn,q,k,stn,enn,su,cou;
      |                                               ^~
hotspot.cpp:13:50: warning: unused variable 'cou' [-Wunused-variable]
   13 |     int i,j,n,m,f,t,cdi,fdi,fn,cn,q,k,stn,enn,su,cou;
      |                                                  ^~~
hotspot.cpp:15:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     scanf("%d %d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~
hotspot.cpp:18:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |         scanf("%d %d",&f,&t);
      |         ~~~~~^~~~~~~~~~~~~~~
hotspot.cpp:22:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |     scanf("%d",&q);
      |     ~~~~~^~~~~~~~~
hotspot.cpp:25:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |         scanf("%d %d",&stn,&enn);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 588 KB Output is correct
3 Correct 1 ms 544 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 588 KB Output is correct
3 Correct 1 ms 544 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 536 KB Output is correct
9 Correct 1 ms 588 KB Output is correct
10 Correct 1 ms 588 KB Output is correct
11 Correct 1 ms 460 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 588 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 588 KB Output is correct
3 Correct 1 ms 544 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 1 ms 588 KB Output is correct
10 Correct 2 ms 588 KB Output is correct
11 Correct 2 ms 588 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 2 ms 460 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 588 KB Output is correct
3 Correct 1 ms 544 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 536 KB Output is correct
9 Correct 1 ms 588 KB Output is correct
10 Correct 1 ms 588 KB Output is correct
11 Correct 1 ms 460 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 588 KB Output is correct
15 Correct 1 ms 460 KB Output is correct
16 Correct 1 ms 588 KB Output is correct
17 Correct 2 ms 588 KB Output is correct
18 Correct 2 ms 588 KB Output is correct
19 Correct 1 ms 460 KB Output is correct
20 Correct 1 ms 460 KB Output is correct
21 Correct 2 ms 460 KB Output is correct
22 Correct 1 ms 532 KB Output is correct
23 Correct 1 ms 460 KB Output is correct
24 Correct 2 ms 588 KB Output is correct
25 Correct 3 ms 588 KB Output is correct
26 Correct 2 ms 540 KB Output is correct
27 Correct 1 ms 460 KB Output is correct
28 Correct 2 ms 508 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 588 KB Output is correct
3 Correct 1 ms 544 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 536 KB Output is correct
9 Correct 1 ms 588 KB Output is correct
10 Correct 1 ms 588 KB Output is correct
11 Correct 1 ms 460 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 588 KB Output is correct
15 Correct 3 ms 588 KB Output is correct
16 Correct 2 ms 588 KB Output is correct
17 Correct 3 ms 716 KB Output is correct
18 Correct 2 ms 588 KB Output is correct
19 Correct 3 ms 672 KB Output is correct
20 Correct 3 ms 588 KB Output is correct
21 Correct 1 ms 588 KB Output is correct

Subtask #6
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 588 KB Output is correct
3 Correct 1 ms 544 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 536 KB Output is correct
9 Correct 1 ms 588 KB Output is correct
10 Correct 1 ms 588 KB Output is correct
11 Correct 1 ms 460 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 588 KB Output is correct
15 Correct 1 ms 460 KB Output is correct
16 Correct 1 ms 588 KB Output is correct
17 Correct 2 ms 588 KB Output is correct
18 Correct 2 ms 588 KB Output is correct
19 Correct 1 ms 460 KB Output is correct
20 Correct 1 ms 460 KB Output is correct
21 Correct 2 ms 460 KB Output is correct
22 Correct 1 ms 532 KB Output is correct
23 Correct 1 ms 460 KB Output is correct
24 Correct 2 ms 588 KB Output is correct
25 Correct 3 ms 588 KB Output is correct
26 Correct 2 ms 540 KB Output is correct
27 Correct 1 ms 460 KB Output is correct
28 Correct 2 ms 508 KB Output is correct
29 Correct 3 ms 588 KB Output is correct
30 Correct 2 ms 588 KB Output is correct
31 Correct 3 ms 716 KB Output is correct
32 Correct 2 ms 588 KB Output is correct
33 Correct 3 ms 672 KB Output is correct
34 Correct 3 ms 588 KB Output is correct
35 Correct 1 ms 588 KB Output is correct
36 Correct 30 ms 672 KB Output is correct
37 Correct 67 ms 848 KB Output is correct
38 Correct 313 ms 1248 KB Output is correct
39 Correct 231 ms 1260 KB Output is correct
40 Correct 31 ms 844 KB Output is correct
41 Correct 198 ms 1320 KB Output is correct
42 Correct 232 ms 1296 KB Output is correct
43 Correct 18 ms 780 KB Output is correct
44 Correct 16 ms 716 KB Output is correct