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Submission #854402

# Submission time Handle Problem Language Result Execution time Memory
854402 2023-09-27T10:03:40 Z pliam Fancy Fence (CEOI20_fancyfence) C++17
12 / 100
 122 ms 262144 KB 
#include <bits/stdc++.h>
using namespace std;
#define MAXN 100005
typedef long long ll;
#define MOD (ll)1e9+7
#define INF (ll)2e9
/*
Brute force N^4
*/
int N, L;
ll h[MAXN], w[MAXN];
vector<ll> nh;
int main(){
    scanf("%d",&N);
    for(int i=0;i<N;i++){
        scanf("%lld",&h[i]);
    }
    for(int i=0;i<N;i++){
        scanf("%lld",&w[i]);
        for(int j=0;j<w[i];j++){
            L++;
            nh.push_back(h[i]);
        }
    }
    ll ans=0;
    for(int i=0;i<L;i++){
        // printf("%lld\n", nh[i]);
        for(int j=0; j<=i; j++){
            //[j,i], find minimum m and answer is m*(m+1)/2
            ll m=INF;
            for(int k=j;k<=i;k++){
                m = min(m, nh[k]);
            }
            ans += (m*(m+1))/2LL;
            ans %= MOD;
        }
    }
    printf("%lld\n", ans);
}

Compilation message

fancyfence.cpp: In function 'int main()':
fancyfence.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     scanf("%d",&N);
      |     ~~~~~^~~~~~~~~
fancyfence.cpp:16:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |         scanf("%lld",&h[i]);
      |         ~~~~~^~~~~~~~~~~~~~
fancyfence.cpp:19:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |         scanf("%lld",&w[i]);
      |         ~~~~~^~~~~~~~~~~~~~

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Runtime error 122 ms 262144 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Runtime error 106 ms 262144 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Runtime error 108 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Runtime error 107 ms 262144 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #6
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Runtime error 105 ms 262144 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #7
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Runtime error 122 ms 262144 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -