Submission #1068314

#	Time	Username	Problem	Language	Result	Execution time	Memory
1068314		vjudge1	Naval battle (CEOI24_battle)	C++17	30 / 100	191 ms	32596 KiB

Main

#include <bits/stdc++.h>
#define int long long

using namespace std;

struct S {
    int x, y, d;
    S(){}
};
map<char,int> trans = {{'N',0}, {'E',1}, {'S',2}, {'W',3}};

void solve() {
    int n;
    char temp;
    cin >> n;
    vector<S> a(n);
    map<int,vector<int>> diag;
    for(int i = 0; i < n; i++) {
        cin >> a[i].x >> a[i].y >> temp;
        a[i].d = trans[temp];
        diag[a[i].x + a[i].y].push_back(i);
    }
    for(auto i : diag) {
        sort(i.second.begin(), i.second.end(), [&](int x, int y){
            return a[x].y > a[y].y;
        });
        stack<int> st;
        for(int j = 0; j < i.second.size(); j++) {
            if(a[i.second[j]].d == 1) st.push(i.second[j]);
            else if(a[i.second[j]].d == 2) {
                if(!st.size()) cout << i.second[j] + 1 << "\n";
                else st.pop();
            }
        }
        while(st.size()) {
            cout << st.top() + 1 << "\n";
            st.pop();
        }
    }
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    solve();
}

Compilation message (stderr)

Main.cpp: In function 'void solve()':
Main.cpp:28:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |         for(int j = 0; j < i.second.size(); j++) {
      |                        ~~^~~~~~~~~~~~~~~~~

• Subtask 0: 0 / 0
• Subtask 1: 0 / 6
• Subtask 2: 0 / 12
• Subtask 3: 0 / 8
• Subtask 4: 0 / 11
• Subtask 5: 0 / 9
• Subtask 6: 30 / 30
• Subtask 7: 0 / 24