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Submission #153865

# Submission time Handle Problem Language Result Execution time Memory
153865 2019-09-17T05:45:41 Z georgerapeanu Pinball (JOI14_pinball) C++11
100 / 100
 815 ms 26432 KB 
#include <cstdio>
#include <map>
#include <iostream>

using namespace std;

const int NMAX = 1e5;
const int LEAFS = 3e5;
const long long inf = 1e17;
int n,k;
int a[NMAX + 5];
int b[NMAX + 5];
int c[NMAX + 5];
int d[NMAX + 5];

map<int,int> to_norm;
long long cost[NMAX + 5];
long long cost2[NMAX + 5];


long long aint[2 * LEAFS + 5];

void reset(){
    for(int i = 1;i <= 2 * LEAFS;i++){
        aint[i] = inf;
    } 
}

void update(int pos,long long val){
    pos += LEAFS;
    for(aint[pos] = min(aint[pos],val);pos > 1;(pos >>= 1)){
        aint[pos >> 1] = min(aint[pos >> 1],val);
    }
}

long long query(int l,int r){
    long long ans = inf;
    r++;

    for(l += LEAFS,r += LEAFS;l < r;(l >>= 1),(r >>= 1)){
        if(l & 1)ans = min(ans,aint[l++]);
        if(r & 1)ans = min(ans,aint[--r]);
    }

    return ans;
}

int main(){

    scanf("%d %d",&k,&n);

    for(int i = 1;i <= k;i++){
        scanf("%d %d %d %d",&a[i],&b[i],&c[i],&d[i]);
        to_norm[a[i]] = 1;
        to_norm[b[i]] = 1;
        to_norm[c[i]] = 1;
    }

    to_norm[1] = 1;
    to_norm[n] = 1;

    int last = 0;
    for(auto &it:to_norm){
        it.second = ++last;    
    }

    reset();
    update(1,0);
    for(int i = 1;i <= k;i++){
        cost[i] = d[i] + query(to_norm[a[i]],to_norm[b[i]]);
        update(to_norm[c[i]],cost[i]);
    }

    reset();
    update(to_norm[n],0);
    for(int i = 1;i <= k;i++){
        cost2[i] = d[i] + query(to_norm[a[i]],to_norm[b[i]]);
        update(to_norm[c[i]],cost2[i]);
    }

    long long ans = inf;

    for(int i = 1;i <= k;i++){
        ans = min(ans,cost[i] + cost2[i] - d[i]);
    }

    printf("%lld\n",(ans == inf ? -1:ans));

    return 0;
}

Compilation message

pinball.cpp: In function 'int main()':
pinball.cpp:50:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&k,&n);
     ~~~~~^~~~~~~~~~~~~~~
pinball.cpp:53:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d %d",&a[i],&b[i],&c[i],&d[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5116 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 8 ms 4984 KB Output is correct
4 Correct 7 ms 4984 KB Output is correct
5 Correct 7 ms 5112 KB Output is correct
6 Correct 8 ms 5112 KB Output is correct
7 Correct 7 ms 5112 KB Output is correct
8 Correct 7 ms 5112 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5116 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 8 ms 4984 KB Output is correct
4 Correct 7 ms 4984 KB Output is correct
5 Correct 7 ms 5112 KB Output is correct
6 Correct 8 ms 5112 KB Output is correct
7 Correct 7 ms 5112 KB Output is correct
8 Correct 7 ms 5112 KB Output is correct
9 Correct 8 ms 4980 KB Output is correct
10 Correct 8 ms 4984 KB Output is correct
11 Correct 10 ms 4988 KB Output is correct
12 Correct 7 ms 5112 KB Output is correct
13 Correct 7 ms 5112 KB Output is correct
14 Correct 7 ms 5112 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5116 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 8 ms 4984 KB Output is correct
4 Correct 7 ms 4984 KB Output is correct
5 Correct 7 ms 5112 KB Output is correct
6 Correct 8 ms 5112 KB Output is correct
7 Correct 7 ms 5112 KB Output is correct
8 Correct 7 ms 5112 KB Output is correct
9 Correct 8 ms 4980 KB Output is correct
10 Correct 8 ms 4984 KB Output is correct
11 Correct 10 ms 4988 KB Output is correct
12 Correct 7 ms 5112 KB Output is correct
13 Correct 7 ms 5112 KB Output is correct
14 Correct 7 ms 5112 KB Output is correct
15 Correct 6 ms 4984 KB Output is correct
16 Correct 7 ms 5112 KB Output is correct
17 Correct 9 ms 5240 KB Output is correct
18 Correct 8 ms 5112 KB Output is correct
19 Correct 9 ms 5240 KB Output is correct
20 Correct 8 ms 5112 KB Output is correct
21 Correct 7 ms 5112 KB Output is correct
22 Correct 9 ms 5240 KB Output is correct
23 Correct 8 ms 5240 KB Output is correct
24 Correct 9 ms 5240 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5116 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 8 ms 4984 KB Output is correct
4 Correct 7 ms 4984 KB Output is correct
5 Correct 7 ms 5112 KB Output is correct
6 Correct 8 ms 5112 KB Output is correct
7 Correct 7 ms 5112 KB Output is correct
8 Correct 7 ms 5112 KB Output is correct
9 Correct 8 ms 4980 KB Output is correct
10 Correct 8 ms 4984 KB Output is correct
11 Correct 10 ms 4988 KB Output is correct
12 Correct 7 ms 5112 KB Output is correct
13 Correct 7 ms 5112 KB Output is correct
14 Correct 7 ms 5112 KB Output is correct
15 Correct 6 ms 4984 KB Output is correct
16 Correct 7 ms 5112 KB Output is correct
17 Correct 9 ms 5240 KB Output is correct
18 Correct 8 ms 5112 KB Output is correct
19 Correct 9 ms 5240 KB Output is correct
20 Correct 8 ms 5112 KB Output is correct
21 Correct 7 ms 5112 KB Output is correct
22 Correct 9 ms 5240 KB Output is correct
23 Correct 8 ms 5240 KB Output is correct
24 Correct 9 ms 5240 KB Output is correct
25 Correct 38 ms 6392 KB Output is correct
26 Correct 112 ms 9252 KB Output is correct
27 Correct 467 ms 13132 KB Output is correct
28 Correct 174 ms 9432 KB Output is correct
29 Correct 265 ms 11916 KB Output is correct
30 Correct 317 ms 10092 KB Output is correct
31 Correct 676 ms 17408 KB Output is correct
32 Correct 572 ms 15244 KB Output is correct
33 Correct 61 ms 9080 KB Output is correct
34 Correct 323 ms 15056 KB Output is correct
35 Correct 308 ms 23672 KB Output is correct
36 Correct 815 ms 24116 KB Output is correct
37 Correct 686 ms 26432 KB Output is correct
38 Correct 624 ms 26104 KB Output is correct