oj.uz

Submission #284320

# Submission time Handle Problem Language Result Execution time Memory
284320 2020-08-27T08:35:35 Z 문홍윤(#5761) Aesthetic (NOI20_aesthetic) C++17
13 / 100
 2000 ms 33752 KB 
#include <bits/stdc++.h>
#define eb emplace_back
#define mp make_pair
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define svec(x) sort(x.begin(), x.end())
#define press(x) x.erase(unique(x.begin(), x.end()), x.end())
using namespace std;
typedef long long LL;
typedef pair<int, int> pii;
typedef pair<LL, LL> pll;
typedef pair<int, LL> pil;
typedef pair<LL, int> pli;
const LL llinf=2e18;
const int inf=1e9;

int n, m;
pair<LL, pii> edg[300010];
LL ans;

vector<pil> link[300010];
priority_queue<pli, vector<pli>, greater<pli> > pq;
LL dis[300010];
LL dijk(){
    for(int i=1; i<=n; i++){
        dis[i]=llinf;
        link[i].clear();
    }
    for(int i=1; i<=m; i++){
        link[edg[i].S.F].eb(edg[i].S.S, edg[i].F);
        link[edg[i].S.S].eb(edg[i].S.F, edg[i].F);
    }
    pq.push(mp(0ll, 1));
    while(pq.size()){
        int nw=pq.top().S; LL d=pq.top().F;
        pq.pop();
        if(dis[nw]<=d)continue;
        dis[nw]=d;
        for(auto i:link[nw])pq.push(mp(d+i.S, i.F));
    }
    return dis[n];
}

int main(){
    scanf("%d %d", &n, &m);
    for(int i=1; i<=m; i++)scanf("%d %d %lld", &edg[i].S.F, &edg[i].S.S, &edg[i].F);
    LL maxx=edg[m].F;
    ans=dijk();
    for(int i=m-1; i>=1; i--){
        edg[i].F+=maxx;
        ans=max(ans, dijk());
        edg[i].F-=maxx;
        maxx=max(maxx, edg[i].F);
    }
    printf("%lld", ans);
}

Compilation message

Aesthetic.cpp: In function 'int main()':
Aesthetic.cpp:46:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   46 |     scanf("%d %d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~~
Aesthetic.cpp:47:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   47 |     for(int i=1; i<=m; i++)scanf("%d %d %lld", &edg[i].S.F, &edg[i].S.S, &edg[i].F);
      |                            ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7424 KB Output is correct
2 Correct 6 ms 7424 KB Output is correct
3 Correct 6 ms 7424 KB Output is correct
4 Correct 7 ms 7424 KB Output is correct
5 Correct 6 ms 7424 KB Output is correct
6 Correct 6 ms 7424 KB Output is correct
7 Correct 6 ms 7424 KB Output is correct
8 Correct 6 ms 7424 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7424 KB Output is correct
2 Correct 6 ms 7424 KB Output is correct
3 Correct 6 ms 7424 KB Output is correct
4 Correct 7 ms 7424 KB Output is correct
5 Correct 6 ms 7424 KB Output is correct
6 Correct 6 ms 7424 KB Output is correct
7 Correct 6 ms 7424 KB Output is correct
8 Correct 6 ms 7424 KB Output is correct
9 Correct 844 ms 7612 KB Output is correct
10 Correct 858 ms 7552 KB Output is correct
11 Correct 714 ms 7564 KB Output is correct
12 Correct 731 ms 7572 KB Output is correct
13 Correct 703 ms 7596 KB Output is correct
14 Correct 716 ms 7600 KB Output is correct
15 Correct 734 ms 7600 KB Output is correct
16 Correct 718 ms 7600 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2082 ms 30484 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2091 ms 30840 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2084 ms 33752 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 22.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2084 ms 33752 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7424 KB Output is correct
2 Correct 6 ms 7424 KB Output is correct
3 Correct 6 ms 7424 KB Output is correct
4 Correct 7 ms 7424 KB Output is correct
5 Correct 6 ms 7424 KB Output is correct
6 Correct 6 ms 7424 KB Output is correct
7 Correct 6 ms 7424 KB Output is correct
8 Correct 6 ms 7424 KB Output is correct
9 Correct 844 ms 7612 KB Output is correct
10 Correct 858 ms 7552 KB Output is correct
11 Correct 714 ms 7564 KB Output is correct
12 Correct 731 ms 7572 KB Output is correct
13 Correct 703 ms 7596 KB Output is correct
14 Correct 716 ms 7600 KB Output is correct
15 Correct 734 ms 7600 KB Output is correct
16 Correct 718 ms 7600 KB Output is correct
17 Execution timed out 2082 ms 30484 KB Time limit exceeded
18 Halted 0 ms 0 KB -