oj.uz

Submission #257895

# Submission time Handle Problem Language Result Execution time Memory
257895 2020-08-05T03:07:45 Z daniel920712 Boat (APIO16_boat) C++14
9 / 100
 2000 ms 8312 KB 
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <set>
#include <map>

using namespace std;
long long MOD=1e9+7;
map < pair < long long , long long > , long long > all;
long long N;
long long a[505],b[505];
long long F(long long x,long long y)
{
    long long i;
    //printf("%lld %lld\n",x,y);
    if(x==0) return y!=1e9+5;
    if(all.find(make_pair(x,y))!=all.end()) return all[make_pair(x,y)];
    all[make_pair(x,y)]=F(x-1,y);
    for(i=a[x];i<=min(b[x],y-1);i++)
    {

        all[make_pair(x,y)]+=F(x-1,i);
        all[make_pair(x,y)]%=MOD;
    }
    //printf("%lld %lld %lld\n",x,y,all[make_pair(x,y)]);
    return all[make_pair(x,y)];
}
int main()
{
    long long N,M,i;
    scanf("%lld",&N);
    for(i=1;i<=N;i++) scanf("%lld %lld",&a[i],&b[i]);
    printf("%lld\n",F(N,1e9+5));


    return 0;
}

Compilation message

boat.cpp: In function 'int main()':
boat.cpp:30:17: warning: unused variable 'M' [-Wunused-variable]
     long long N,M,i;
                 ^
boat.cpp:31:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld",&N);
     ~~~~~^~~~~~~~~~~
boat.cpp:32:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(i=1;i<=N;i++) scanf("%lld %lld",&a[i],&b[i]);
                       ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 8312 KB Output is correct
2 Correct 87 ms 8312 KB Output is correct
3 Correct 86 ms 8188 KB Output is correct
4 Correct 85 ms 8184 KB Output is correct
5 Correct 86 ms 8184 KB Output is correct
6 Correct 119 ms 8184 KB Output is correct
7 Correct 114 ms 8184 KB Output is correct
8 Correct 114 ms 8200 KB Output is correct
9 Correct 115 ms 8184 KB Output is correct
10 Correct 115 ms 8184 KB Output is correct
11 Correct 110 ms 8312 KB Output is correct
12 Correct 116 ms 8184 KB Output is correct
13 Correct 115 ms 8200 KB Output is correct
14 Correct 126 ms 8184 KB Output is correct
15 Correct 115 ms 8232 KB Output is correct
16 Correct 31 ms 2552 KB Output is correct
17 Correct 25 ms 2688 KB Output is correct
18 Correct 24 ms 2560 KB Output is correct
19 Correct 35 ms 2680 KB Output is correct
20 Correct 24 ms 2680 KB Output is correct

Subtask #2
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 8312 KB Output is correct
2 Correct 87 ms 8312 KB Output is correct
3 Correct 86 ms 8188 KB Output is correct
4 Correct 85 ms 8184 KB Output is correct
5 Correct 86 ms 8184 KB Output is correct
6 Correct 119 ms 8184 KB Output is correct
7 Correct 114 ms 8184 KB Output is correct
8 Correct 114 ms 8200 KB Output is correct
9 Correct 115 ms 8184 KB Output is correct
10 Correct 115 ms 8184 KB Output is correct
11 Correct 110 ms 8312 KB Output is correct
12 Correct 116 ms 8184 KB Output is correct
13 Correct 115 ms 8200 KB Output is correct
14 Correct 126 ms 8184 KB Output is correct
15 Correct 115 ms 8232 KB Output is correct
16 Correct 31 ms 2552 KB Output is correct
17 Correct 25 ms 2688 KB Output is correct
18 Correct 24 ms 2560 KB Output is correct
19 Correct 35 ms 2680 KB Output is correct
20 Correct 24 ms 2680 KB Output is correct
21 Execution timed out 2076 ms 1236 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2086 ms 384 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 8312 KB Output is correct
2 Correct 87 ms 8312 KB Output is correct
3 Correct 86 ms 8188 KB Output is correct
4 Correct 85 ms 8184 KB Output is correct
5 Correct 86 ms 8184 KB Output is correct
6 Correct 119 ms 8184 KB Output is correct
7 Correct 114 ms 8184 KB Output is correct
8 Correct 114 ms 8200 KB Output is correct
9 Correct 115 ms 8184 KB Output is correct
10 Correct 115 ms 8184 KB Output is correct
11 Correct 110 ms 8312 KB Output is correct
12 Correct 116 ms 8184 KB Output is correct
13 Correct 115 ms 8200 KB Output is correct
14 Correct 126 ms 8184 KB Output is correct
15 Correct 115 ms 8232 KB Output is correct
16 Correct 31 ms 2552 KB Output is correct
17 Correct 25 ms 2688 KB Output is correct
18 Correct 24 ms 2560 KB Output is correct
19 Correct 35 ms 2680 KB Output is correct
20 Correct 24 ms 2680 KB Output is correct
21 Execution timed out 2076 ms 1236 KB Time limit exceeded
22 Halted 0 ms 0 KB -