#include <cstdio> using namespace std; #define FOR(i,a,b) for(int i=(a);i<(b);++i) #define REP(i,n) FOR(i,0,n) #define INT(x) int x; scanf("%d", &x) int main() { INT(n); int x = 2; REP(i,n) { INT(a); if (x && a == 1) --x; } printf("%d\n2\n1 2\n", x); }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | #include <cstdio> using namespace std; #define FOR(i,a,b) for(int i=(a);i<(b);++i) #define REP(i,n) FOR(i,0,n) #define INT(x) int x; scanf("%d", &x) int main() { INT(n); int x = 2; REP(i,n) { INT(a); if (x && a == 1) --x; } printf("%d\n2\n1 2\n", x); } |