/* ID: didarco1 TASK: LANG: c++17 */ #include "bits/stdc++.h" #define ll long long int #define pb push_back #define pii pair<int,int> #define ff first #define ss second #define sz size() const int MOD = 1e9+7; const int N = 501; using namespace std; int a[N], b[N], dp[N], ans; int main(){ ios::sync_with_stdio(false); cin.tie(nullptr); //freopen("input.in", "r", stdin); //freopen("output.out", "w", stdout); int n; cin >> n; for(int i = 1; i <= n; i++) cin >> a[i] >> b[i], dp[i]; for(int i = 1; i <= n; i++){ for(int j = i-1; j > 0; j--){ if(a[i] > a[j]){ dp[i] += dp[j] + 1; dp[i] %= MOD; } } } for(int i = 1; i <= n; i++){ ans += dp[i]; ans %= MOD; } cout << ans + n; }

boat.cpp: In function 'int main()':
boat.cpp:27:58: warning: right operand of comma operator has no effect [-Wunused-value]
   27 |     for(int i = 1; i <= n; i++) cin >> a[i] >> b[i], dp[i];
      |                                                      ~~~~^